List of Marvel Comics teams and organizations

The comic book stories published by Marvel Comics since the 1940s have featured several fictional teams and organizations and this page lists them.

0–9
The 198

A

 * A-Force
 * A-Next
 * A.I. Army - Because of his revelation that he is now a simulated A.I., Tony Stark became Mark One and started to establish the A.I. Army which also consists of Albert, Awesome Android, H.E.R.B.I.E., M-11, Machine Man, Machinesmith, Quasimodo, the Dreadnoughts, a Sentinel, several Constructo-Bots, several Nick Fury LMDs, and an unnamed bomb disposal robot. This group wants to obtain equal rights with organic beings through whatever way possible.
 * Acolytes
 * Action Pack - Action Pack is Kentucky's sanctioned superhero team that's part of the Avengers: The Initiative. It's known members are Vox, Prima Donna, and Frog-Man (who was briefly replaced by a Skrull).
 * A.I.M. (Advanced Idea Mechanics)
 * Advocates Squad
 * Agents of Atlas
 * Agents of Fortune
 * Aladdin (Ultraverse)
 * Aladdin Assault Squad (Ultraverse)
 * All-New Invaders
 * All-New X-Factor
 * All-New X-Men
 * All-Winners Squad
 * Alliance of Evil
 * Alpha Flight - Canada's sanctioned superhero team.
 * Alpha Squadron
 * America Redeemers
 * Americops - The Keane Industry obtained the equipment of Americop where they copied it and used it to create their own private security force called the Americops.
 * Anachronauts - The Anachronauts are a group of fictional warriors appearing in American comic books published by Marvel Comics. The characters serve Kang the Conqueror as his personal guard. The Anachronauts were brought together by Kang, after having bested each of them in personal combat and extracting their allegiance to him. They are from various eras and alternate realities that Kang has visited in his journeys. They first appeared in Fantastic Four Annual #25 (1992). Its members are Apocryphus, Deathunt 9000, Raa, Sir Raston, Ssith, Tyndar, and Wildrun'''
 * Ani-Men
 * Annihilators
 * Apocalypse's Horsemen (see Horsemen of Apocalypse)
 * A.R.M.O.R. (see S.H.I.E.L.D.)
 * Army of Evil
 * Asgardians
 * Asgardians of the Galaxy
 * Askani
 * Assassin's Guild
 * Assembly of Evil - The Assembly of Evil is a supervillain team consisting of Jester, Fenris, Hydro-Man, Rock (who the Leader sent in his place), and the reactivated Hulk Robot. This team was first seen during the "Acts of Vengeance" storyline, where Jester formed this team at Doctor Doom's suggestion to create a group to fight the Avengers. Jester also tried to get Cloak and Dagger to join the team, but failed to.
 * Astonishing X-Men
 * Atlanteans
 * Autobots
 * Avengers
 * Avengers A.I.
 * Avengers Arena
 * Avengers Resistance
 * Avengers Undercover
 * Avengers West Coast (see West Coast Avengers)
 * Avenging Host

B

 * The B-Sides (see Craptacular B-Sides)
 * Bacchae
 * BAD Girls, Inc. - Black Mamba, the Asp, and Diamondback were close friends as well as founding members of Sidewinder's super-villain team, the Serpent Society. When Diamondback began dating Steve Rogers, the team acted behind the scenes to make sure that her first real date was uneventful. After learning of Diamondback and Cap's relationship, the Society's new leader, King Cobra, had Diamondback kidnapped and placed on trial, fearing that she would reveal the groups secrets to the Captain. Diamondback was found guilty by her fellow serpents and sentenced to execution. Black Mamba and Asp objected but were overruled by King Cobra. To save Diamondback, Black Mamba and Asp called in a favor from their former leader, Sidewinder, also Black Mamba's ex-boyfriend and they rescued Diamondback, however in retaliation, King Cobra captured the Asp and Black Mamba. Diamondback then hired Paladin to help her free the pair. Together, with Captain America, and Paladin, the five combined to defeat the Serpent Society.
 * Band of the Bland
 * Battalion - The Battalion is Arkansas' sanctioned superhero team that's part of the Initiative. Tigra is a known member of this group. Razorback was revealed to be a Skrull in disguise.
 * Batroc's Brigade
 * The Battalion
 * Beta Flight
 * Beyond Corporation©
 * Beyonders
 * Big Hero 6
 * Black Air
 * Black Panther
 * Black Brigade unit
 * Black Spectre
 * The Blood
 * Blood Brothers
 * Bogatyri
 * Bozanian Beast Fighter (Ragnarok)
 * Brotherhood of Badoon
 * Brotherhood of Mutants
 * Brothers Grimm
 * Brute Force
 * Buckies - Urban commandos

C

 * Cabal
 * Cadre K
 * The Called - The Called is Utah's sanctioned superhero team that's part of the Initiative. It consists of some unnamed Mormon superheroes.
 * Captain Britain Corps
 * Caretakers
 * Carnage Family
 * Cat People
 * The Cavalry - The Cavalry is Georgia's sanctioned superhero team that's part of the Initiative. Known members are Stunt-Master, Crime-Buster, Red Nine, Thor Girl (revealed to be a Skrull imposter), and Ultra Girl.
 * Celestials
 * Cerebro's X-Men
 * Challengers of the Fantastic (Amalgam Comics)
 * Champions (1975 team)
 * Champions (2016 team)
 * Champions of Xandar
 * The Charter
 * The Chaste
 * Cherubim
 * Children of the Vault
 * China Force
 * Church of Humanity
 * Circle
 * Circuits Maximus
 * Circus of Crime
 * Clan Akkaba
 * Clan Boudreaux
 * ClanDestine
 * Cloak and Dagger
 * Cobra
 * Code: Blue
 * Cognoscenti
 * Comedy Kids - Three kids (Gabby, Muscles, and Junior) who appear in Comedy Comics #9
 * The Command - The Command is Florida's sanctioned superhero team that's part of the Initiative. It's known members are Jennifer Kale, Wundarr the Aquarian, Siege, and Conquistador (who was briefly replaced by a Skrull).
 * Commission on Superhuman Activities
 * The Committee
 * The Conspiracy
 * Contingency
 * The Corporation
 * Council of the Chosen
 * C.R.A.D.L.E. - Short for Child-Hero Reconnaissance and Disruption Law Enforcement, C.R.A.D.L.E. has been established to stop the teenage superheroes from violating the Underage Superhuman Warfare Act (AKA Kamala's Law). Known members are Dum Dum Dugan, Carolina Washington, Jake Oh, Justice, Speedball, and Timeslip.
 * Craptacular B-Sides
 * Crazy Eight
 * Creators
 * The Crew
 * Chronok the villain Chronok stole Reed Richards' time machine, comes to the present and kills almost all of Marvel's heroes.
 * Cross Technological Enterprises
 * Crusaders

D

 * Dark Advanced Tech (DAT)
 * DAT Leader: (Red Hulk) and DAT Members: (Venom, Ronan the Accuser)
 * Daily Bugle
 * Daily Globe
 * Damage Control
 * Dark Avengers
 * Dark Fantastic Four
 * Dark Fantastic Four Leaders - (Dark Phoenix, Red Hulk) Dark Fantastic Four Members: (Ultron, Hobgoblin)
 * Dark Fantastic Four Council - (Dark Phoenix (Leader), Red Hulk)
 * Dark Guard
 * Dark Lords
 * Dark Riders
 * Dark X-Men
 * Darkhold Redeemers
 * Daughters of the Dragon
 * Dawn of the White Light
 * Deadpool Corps
 * Death Commandos
 * Death Squad - The Death Squad are hired by a mysterious employer who wants Tony Stark, the armored Avenger known as Iron Man, dead. They manage to track Iron Man down at his main office, and a battle began. Though they gave Stark a good run for his money, they were not able to defeat the super-hero. Stark is about to defeat the entire group, but they manage an escape. Stark is unable to give pursuit, as the Death Squad had damaged his armor's boot jets. Later, the Death Squad decide to give the murder attempt another try. They assist their employer (Justin Hammer) in the murder of several ionically-powered beings and in the graverobbing of several of Stark's old acquaintances. S.H.I.E.L.D. leader Nick Fury informs Stark about this and he investigates the matter, with the trail eventually leading toward the Death Squad, who were hiding out at the old castle of the ionically-powered long-time Avengers foe Count Nefaria. Nefaria is revealed to be their employer. Iron Man manages to defeat Nefaria and his other minion, Nitro. In the heat of battle, the Death Squad again manages to escape.
 * Death-Throws
 * Death Web - The members of Death Web were granted super powers by the Commission on Superhuman Activities with the intent that they use their powers to serve the government. The team's individual members each obtained their unique powers through the scientific manipulation of chemicals extracted from exotic plants from the Amazon jungle.
 * Decepticons
 * - There were two different incarnations of the Deep Six.
 * Namor's Deep Six - When Namor the Sub-Mariner was missing and framed for crimes in the surface world, several of his Atlantean allies set out to find him together as the first Deep Six. The impromptu group consisted of Stingray, Andromeda, Tiger Shark, Tamara Rahn, and Triton. They battled against the Avengers and then broke up shortly thereafter.
 * Attuma's Deep Six - Alternatively, Attuma's incarnation of the Deep Six appeared in Defenders vol. 2 #7 (September, 2001). Membership of the group included Attuma, Nagala, Orka, Piranha, Sea Urchin, and Tiger Shark (now a villain again).
 * Defenders
 * Defenders of the Deep - In order to protect the oceans, Namor forms the Defenders of the Deep with Tiger Shark, Orka, Andromeda, Echidna, the Piranhas, Fathom Five members Bloodtide and Manowar, and King Crab as its members.
 * Delta Network
 * Demi-Men
 * Demons
 * Desert Stars - The Desert Stars are Arizona's sanctioned superhero team in the Initiative. The group consists of Two-Gun Kid, Komodo, Johnny Cool, and Supermax. Blacksmith was revealed to be a Skrull infiltrator.
 * Department H
 * Department K
 * Desert Sword - Desert Sword was designed to be Iraq's personal superhuman military team, led by Sirocco. The original team's roster included Sirocco, Aminedi, the Veil, and Black Raazer until Iraq forced Arabian Knight onto the team.
 * Deviants
 * Diabolical Duo
 * Doctor Doom's Generals
 * Dominus' Minions
 * D.P.7 (Displaced Paranormals Seven)
 * Dragon Circle (see Defenders)

E

 * Earth Force - The Earth Force is a group of hospitalized people that were transformed by Seth. It consists of Earth Lord (created from a police officer who was hospitalized after being shot by criminals), Skyhawk (created from a businessman who was hospitalized from overwork), and Wind Warrior (created from a housewife who was hospitalized following a suicide attempt).
 * Elders of the Universe
 * Elementals
 * Elements of Doom - A group consisting of numerous humanoid beings composed of the periodic table. They were created by aliens to battle the Avengers, but were all defeated. They were then recruited by Diablo after his Elementals of Doom were destroyed.
 * Elementals of Doom: Four giant personifications of Air, Water, Earth and Fire and referred to as such. They were created by Diablo through the use of the Tailsmans of Power to battle the Fantastic Four. He later created a fifth member called the Trans-Mutant who had the ability to transform the composition of one object to another. Diablo later combined all four Elementals into the Elematrix. In Spider-Man: Far From Home, a team of virtual monsters created by Mysterio dubbed the Elementals appear. However, their behavior is more akin to the Elementals of Doom right down to them combining in the final battle. While each one is never named in the film, the marketing referred to the fire and water Elementals as Molten Man and Hydro-Man, though the film implies that the latter does actually exist somewhere.
 * Emissaries of Evil
 * The Enchanters Three
 * Enclave
 * Enforcers
 * Eternals
 * Euroforce
 * Euro-Trash
 * The Evil Enforcers (see Enforcers)
 * Excalibur
 * Excelsior (see Loners)
 * Exemplars
 * Exiles
 * Exiles (Ultraverse)
 * Exiles (Red Skull allies)
 * Externals

F

 * Factor Three
 * Fallen Angels
 * Fangs - A group that was created to assist Viper in her goals. Its members are Bludgeon, Heat-Ray, Razorblade, and Slither.
 * Fantastic Five
 * Fantastic Force
 * Fantastic Four
 * Fantastic Four Incorporated
 * Ultimate Fantastic Four
 * Fathom Five
 * Fear Lords
 * Fearsome Foursome
 * Femizons
 * Femme Fatales
 * Fenris
 * The FIRM (comics)
 * First Line (Seen in Marvel: The Lost Generation) - Essentially a retcon to fill the gaps caused by Marvel's "sliding timescale", in which the emergence of major superheroes and events was only supposed to have occurred "about ten or fifteen years ago"
 * The Flight
 * Folding Circle
 * Followers of the Light
 * Force Four
 * Force of Nature - Force of Nature is an eco-terrorist group that work for the organization Project Earth. Known members are Aqueduct, Firebrand, Firewall, Skybreaker, Sunstreak, and Terraformer.
 * Force Works
 * Forgotten
 * Four Horsemen of Apocalypse
 * Freedom's Brigade
 * Freedom's Five - World War I team featuring Union Jack, Phantom Eagle, Sir Steel, Silver Squire and Crimson Cavalier
 * Freedom Force
 * Friends of Humanity
 * Frightful Four


 * Future Foundation

G

 * Galactic Guardians
 * Gamma Corps
 * Gamma Flight
 * The Garrison - The Garrison is Vermont's sanctioned superhero team that's part of the Initiative. It's known members are Fin and Man-Eater.
 * The Gatherers
 * Gene Nation
 * Generation X
 * Genetix (Marvel UK)
 * Giants
 * Goblin Nation - The Goblin Nation, also known as the Goblin Underground, is a group of organized crime composed of Goblin-themed villains led by the Goblin King against the Superior Spider-Man (Doctor Octopus' mind in Spider-Man's body).
 * The Goblin Nation made its animated debut in the four-part Spider-Man animated series episode "Goblin War". This incarnation consists of various Goblin clans lead by Silvermane, Electro and Crossbones respectively with the Vulture operating as the Goblin King. Taking advantage of a power vacuum created by the Superior Spider-Man's actions, the Goblin Nation utilizes Oscorp's goblin technology to take over New York. After discovering the organization, Spider-Man joined forces with Spy-D, Ghost Spider, Spider-Girl, Harry Osborn as the Hobgoblin, Doctor Octopus, and Anna Maria Marconi to defeat the Goblin clans before focusing their efforts on the Goblin King. Using a Goblin mech capable of controlling technology, the Goblin King was able to consolidate the Goblin Nation's remnants in an attempt to secure power for himself. Realizing the Neuro Cortex can disable the Goblin mech at great cost to the user, Spider-Man planned to risk his life to accomplish the plan, only for Doc Ock to take his place instead and sacrifice himself to defeat the Goblin King.
 * Gods
 * Godzilla Squad
 * Goodman, Lieber, Kurtzberg & Holliway
 * Grapplers
 * Great Beasts
 * Great Lakes Avengers
 * Green Cross
 * Guardians of the Galaxy (1969 team)
 * Guardians of the Galaxy (2008 team)
 * Guardsmen
 * Gunhawks

H

 * H.A.M.M.E.R.
 * Hammer and Anvil
 * The Hand
 * Harriers - The Harriers are a team of mercenary soldiers, trained and equipped to battle both conventional and superhuman opponents. The organization consists of a military-style unit headed by the commanding officer, Hardcase, and nine other members. Each of the Harriers formerly served as an agent of the international law enforcement agency S.H.I.E.L.D. When the original version of S.H.I.E.L.D. was disbanded, these ten former S.H.I.E.L.D. banded together as the Harriers. The Harriers's last known base of operations was Colbert Chu's warehouse, Street of the Stunted Dog, Lowtown, Madripoor. Hardcase, Battleaxe, and Shotgun took an assignment from the DEA to infiltrate General Nguyen Ngoc Coy's organization in a failed attempt to destroy Coy's major opium crop in the Indochinese "Golden Triangle." During this operation, the Harriers clashed with Wolverine. The Harriers were later hired by Wolverine to try to capture him, Psylocke, and Jubilee as a test of the Harriers's skills.
 * Harvesters - The Harvesters are Kansas' sanctioned superhero team that's part of the Initiative. It's known members are Pioneer, Grain Belt, Topeka, Meadowlark, and Sunflower.
 * H.A.T.E.
 * Headmen
 * Heavy Hitters - The Heavy Hitters are Nevada's sanctioned superhero team that's part of the Initiative. Known members are Gravity, Hardball, Nonstop, Prodigy, and Telemetry.
 * Heavy Metal
 * Heavy Mettle
 * Heliopolitans
 * Hell's Belles
 * Hellfire Club
 * The Hellbent
 * Hellions
 * Heralds of Galactus
 * Heroes for Hire
 * Hordeculture - Hordeculture is a group of agrochemists, biotechnologists, and bioengineers consisting of Augusta Bromes, Lily Leymus, Edith Scutch, and Opal Vetiver. Specializing in the genetic manipulation and propaganda of plant life, they plan to depopulate the human race so that they can return Earth to what they consider a "more pristine state."
 * Horsemen of Apocalypse
 * Hounds
 * Howling Commandos
 * Hulkbusters
 * Humanity's Last Stand
 * HYDRA
 * Hydro-Men - These characters, created by Bill Everett, Steve Gerber and Win Mortimer first appeared in Sub-Mariner #61 (May, 1973). The Hydro-Men is an organization led by fanatical scientist Herman Frayne who used mutagenic Terrigen Mist to transform himself into a green, scaly-skinned humanoid. He took the name of Doctor Hydro. He also transformed his hired agents into Hydro-Men as well.
 * Hyperkind (Razorline)

I

 * Illuminati
 * Imperfects (Marvel-EA)
 * Imperial Guard
 * Infinity Watch
 * Inhumans
 * The Initiative
 * Insidious Six
 * Institute of Evil
 * Intelligencia - Intelligencia is a group that consists of the greatest criminal minds on Earth. It's known members are Leader, MODOK, Mad Thinker, Red Ghost, and Wizard. Doctor Doom and Egghead were shown as former members.
 * The Intruders - The Intruders are an elite offshoot of the Wild Pack.
 * Invaders
 * The Inner Circle

J

 * Jade Syndicate (Activision)
 * Jury

K

 * Kid Commandos
 * Killraven's Freemen
 * Knights of Pendragon
 * Knights of Wundagore
 * Kree Sentries

L

 * Lady Liberators
 * Landau, Luckman, and Lake
 * Lava Men
 * League of Losers - The League of Losers are a superhero from Earth-6215 that opposes the time-traveling Chronok. They consist of that world's version of Dagger, Darkhawk, Gravity, Speedball, Sleepwalker, Terror, and X-23.
 * Leatherneck Raiders
 * Lebeau Clan
 * Legion Of Galactic Guardians 2099 (Amalgam Comics)
 * Legion of Monsters
 * Legion of Night
 * Legion of the Unliving
 * Lemurians
 * Lethal Legion
 * Leviathan
 * Liberteens
 * Liberty Legion
 * Livewires
 * Living Erasers
 * Lizard Men - There are different types of Lizard Men in Marvel Comics:
 * Lizard Men of Subterranea
 * Lizard Men of Subterranea
 * Lizard Men of Zok
 * The Lodge (Ultraverse)
 * Loners
 * Lost Souls
 * Lunataks

M

 * Maelstrom's Minions
 * Maggia
 * Magistrates
 * Magnetic Men (Amalgam Comics)
 * Mandroids
 * Mannites
 * Magneto's Acolytes (see Acolytes)
 * Marauders
 * Marvel Knights
 * Marvel Zombies
 * Masters of Evil
 * The Mavericks - The Maverick's are New Mexico's sanctioned superhero team that's part of the Initiative. It's known members are Annex, Geiger, and Jocasta. She-Thing was revealed to be a Skrull imposter.
 * Mega Morphs
 * Mercs for Money
 * MI-13
 * Micronauts
 * Midnight Sons
 * Midnight Wreckers - The Midnight Wreckers are a group of scavengers who allied with Dr. Peter Spaulding and Willie "Gears" Garvin during the robot revolution. They consist of Hassle, Bags, and Swift.
 * The Mighty Avengers
 * Mindless Ones
 * Minions of Menace
 * Monster Hunters
 * Morlocks
 * Motormouth and Killpower
 * Mutant Force (see Resistants)
 * Mutant Liberation Front
 * Mys-Tech (Marvel UK)
 * Myrmidons

N

 * Nasty Boys
 * National Force
 * Neo
 * Neo-Knights
 * New Avengers
 * New Canaanites
 * New Enforcers - After the fall of Kingpin, the New Enforcers were one of the groups contesting for control of the remains of his empire. The New Enforcers' inner circle consists of Controller, Fixer, Madame Menace, Mentallo, and Mister Fear while their outer circle consists of Blitz, Dragon Man, Dreadnought, Eel, Plantman, a Super-Adaptoid, Tangle, Thermite, and Vanisher.
 * The All-New Exiles (Ultraverse)
 * New Hellions
 * New Intelligencia - An incarnation of Intelligencia consisting of MODOK Superior, Leader, Mad Thinker, Awesome Android, and Mister Sinister.
 * New Invaders
 * New Men
 * New Mutants
 * New Warriors
 * New X-Men
 * Nextwave
 * Neyaphem
 * Nick Fury's Howling Commandos
 * Night Shift
 * Nightstalkers
 * Norns
 * Nova Corps

O

 * O-Force
 * Octessence
 * Office of National Emergency
 * Offenders - A short-lived team meant to serve as an anti-Defenders group formed by the Collector and consisting of Red Hulk, Baron Mordo, Tiger Shark, and Terrax. Hulu intended to air an animated special called The Offenders with Howard the Duck, MODOK, Hit-Monkey, Tigra, and Dazzler making up the titular team, who would have all had pre-established shows of their own. In January 2020 however, Howard the Duck and Tigra & Dazzler were cancelled, though M.O.D.O.K. and Hit-Monkey are still moving forward.
 * Olympians
 * Omega Flight
 * Omega Gang
 * The Order - There were two different versions of The Order.
 * Defenders Offshoot version - This version is an offshoot of the Defenders formed by Doctor Strange, Hulk, Namor, and Silver Surfer who plotted to conquer the world in order to protect it while they were under Yandroth's curse.
 * Initiative version - This version of The Order is California's sanctioned superhero team in the Initiative.
 * Outcasts - There are two different versions of Outcast.
 * The Outcasts - This is the version of the Outcasts from Subterranea.
 * The Outcasts - This version is a mutant group.
 * The Outlaws - The Outlaws are an elite version of the Wild Pack.

P

 * Pacific Overlords
 * Pale Riders
 * Pantheon
 * Paragons
 * People's Defense Force - There are two different versions of the People's Defense Force.
 * People's Defense Force (Belgium version) - This version is a group of Hank Pym's enemies that operate out of the Bratislava Prison Superhuman Research Center.
 * People's Defense Force (China version) - This version is China's sanctioned superhero team following the breakup of China Force.
 * People's Protectorate - See Supreme Soviets
 * Pet Avengers
 * Point Men - The Point Men are Hawaii's sanctioned superhero team that's part of the Initiative. It's known members are Stingray, Devil-Slayer, Star Sign, and Paydirt. Magnitude was revealed to be a Skrull infiltrator.
 * Power Broker, Inc.
 * Power Elite - The Power Elite is a cabal of influential brokers that came together to strengthen the country after Hydra's brief takeover of the United States. Its known members include Thunderbolt Ross, Phil Coulson, Selene, Mayor Wilson Fisk, Norman Osborn, a resurrected Aleksander Lukin (who has the remnant of Red Skull's mind in him) and his wife Alexa, Zeke Stane, Baron Strucker, and Taskmaster.
 * Power Pack
 * Press Gang
 * Pride
 * Prime Sentinels
 * Project Pegasus
 * Project Rebirth
 * Project Wideawake
 * Psi-Force
 * Psionex
 * Purifiers
 * Psycho-nauts (Epic Comics)
 * Psycho-warriors (Marvel UK)

Q

 * Quattro (Ultraverse)
 * Queen's Vengeance

R

 * Rangers
 * The Ravagers
 * R.C.X.
 * Reavers
 * Recorders
 * Redeemers
 * Renegades
 * Resistants
 * Revengers
 * The Right - An anti-mutant organization founded by Cameron Hodge that first appeared in X-Factor #17 (June 1987). The Right employed commandos in high-tech flying battle suits of powered armor with machine guns, missiles, and (presumably to disturb or distract their victims) faceplates resembling a smiley face (in some sources these suits were subsequently nicknamed "Smiley-Face Battlesuits"). They also employed scientists and inventors such as Nanny and Ani-Mator. They faced off against X-Factor and the New Mutants.
 * Rocketeers
 * Roxxon Oil
 * The Runaways

S

 * Salem's Seven
 * Santerians
 * Savage Land Mutates
 * Savage Six
 * Scarlet Knights
 * Scarlet Spiders (Red Team)
 * Scourges
 * Schutz Heiliggruppe
 * Secret Avengers
 * Secret Empire
 * Secret Warriors
 * Sentinels
 * Serpent-Men
 * Serpent Society
 * Serpent Squad
 * Shadow Council - The Shadow Council is an organization that was founded by Aloysius Thorndrake and the Confederacy soldiers with him after they went through the Vanishing Point and came in contact with an entity called the Abyss.
 * A reimagined version of the Shadow Council appears in the Avengers: Black Panther's Quest animated series. This iteration of the group is a secret organization once led by Heinrich Zemo in the 1940s before it was disbanded after Captain America and Peggy Carter defeated them in Switzerland. By the present, a horde of new supervillains re-established the organization and sought to recruit more new members to acquire three Wakandan relics called the Panther's Key. The organization is led by Killmonger and consists of Ulysses Klaue, Madame Masque, Tiger Shark, Princess Zanda, M'Baku, and several Wakandan civilians.
 * Shadow Initiative
 * Shadow-X
 * Shadowmasters
 * S.H.E.
 * S.H.I.E.L.D.
 * Shock Troop
 * Siberforce
 * Sinister Six
 * Sinister Syndicate
 * Sisterhood of the Wasp
 * Sisters of Sin
 * The Six
 * Six-Fingered Hand
 * Six Pack
 * Skeleton Crew
 * Skrull Kill Krew
 * Slingers
 * Soldiers of Misfortune
 * The Solution (Ultraverse)
 * Sons of Satannish
 * Sons of the Serpent
 * Sons of the Tiger
 * Soviet Super-Soldiers
 * Spaceknights
 * Space Phantoms
 * Space Pirates
 * Special Executive
 * The Spider Society
 * Spider-Slayers
 * The Spinsterhood
 * Spirits of Vengeance
 * Squadron Sinister
 * Squadron Supreme
 * Squadron Supreme (Supreme Power) - This version of the Squadron Supreme was created for the Max imprint of Marvel Comics.
 * Squadron Supreme of America - When the Power Elite collaborated with Mephisto, he created some simulacrums that were programmed to become the Squadron Supreme of America where they would serve as the sanctioned superhero team in the United States. Power Elite member Phil Coulson serves as their liaison to the U.S. government.
 * Stane International: Stane International is the company that is run by Obadiah Stane.
 * Starforce
 * Starjammers
 * Stark Industries
 * Star Masters
 * S.T.R.I.K.E.
 * Styx and Stone
 * Subterraneans
 * Sunset Riders
 * Super-Axis
 * Super Soldiers
 * Superguardians
 * Superhuman Restraint Unit
 * Supreme Soviets
 * S.U.R.F.
 * S.W.O.R.D.

T

 * Team America (see Thunderiders)
 * Team X
 * Technet
 * Temploids (Marvel UK)
 * Teen Brigade
 * Terrible Trio
 * Terror Inc.
 * Thieves' Guild (see Gambit)
 * THEM
 * Thor Corps
 * Thunderbolts
 * Thundercats
 * Thunderiders
 * Time-displaced X-Men
 * Time Variance Authority
 * Titanic Three
 * Tough Kid Squad: A group of five kids (Wally and Tom Danger, Derrick Dawes, Butch, and Eagle) who appeared in Tough Kid Squad Comics #1 (March, 1942)
 * Trash
 * Triumph Division - The Philippines' sanctioned superhero team where its members are familial and have been traced back for centuries. The team is led by Red Feather and its members include Anitun, Fighter One, Great Mongoose, Mighty Mother, St. George, and Wishing Man. The ones that first appear were killed by suicide bombers with Iron Man attending a private funeral for them and their successors being made public. They later gained a new member called Wave who helped the Agents of Atlas fight Queen Sindr's fire demons.
 * Triumvirate of Terror
 * Triune Understanding - Triune Understanding is a religious cult created by Kurt Busiek for volume three of the Marvel Comics Avengers series.
 * True Believers
 * The Twelve

U

 * U.S. Hulk Operations - Also called Shadow Base, the U.S. Hulk Operations is a United States military organization that is tasked with the job to hunt down Hulk and his allies. It is led by General Reginald Fortean. After General Fortean's Subject B form is killed, Hulk took control of the U.S. Hulk Operations.
 * U-Foes
 * U-Men
 * The Ultimates
 * Ultimatum
 * Ultimate Fantastic Four
 * Ultimate X-Men
 * Ultraforce
 * Uncanny Avengers
 * Uncanny X-Force
 * Uncanny X-Men
 * Undying Ones
 * Unholy Three
 * Uni-Mind
 * Unified Thieves and Assassins Guild of New Orleans
 * The Union (Marvel UK)
 * Unlimited Class Wrestling Federation
 * Upstarts
 * Uranians

V

 * V-Battalion
 * Valkyrior
 * Vampires
 * Vanguard
 * Vault
 * Vishanti
 * Vulturions - The Vulturions are a group of criminals who wield the same technology as Vulture.

W

 * Wakandans
 * Warbound
 * Warclan
 * Warheads (Marvel UK)
 * Warriors Three
 * Warwolves
 * Watchdogs
 * Weapon P.R.I.M.E.
 * Weapon Plus
 * Weapon X
 * Weapon X (Exiles)
 * Weathermen
 * West Coast Avengers
 * Wild Pack
 * Wildboys - The Wildboys are an unruly pair of street-dwellers that enjoy committing violent acts of vandalism. They are highly formidable street-fighters and are greatly skilled in the use of knives and other conventional street hardware. When the Horsemen of Apocalypse attacked Manhattan during the events of the Fall of the Mutants and caused a blackout, a Vietnam veteran named Ammo organized a gang including the Wildboys, who looted the city. Sometime later, Typhoid Mary gathered the Wildboys together with Ammo, Bullet, and Bushwacker to attack Daredevil; the criminals beat Daredevil so badly that they nearly killed him.
 * Winter Guard - Russia's sanctioned superhero team.
 * Witches
 * Wolfpack
 * The Women Warriors
 * Wrecking Crew

X

 * Xavier's Security Enforcers
 * X-Babies
 * X-Corporation
 * X-Corps
 * X-Factor
 * X-Factor Investigations
 * X-Force
 * X-Men
 * X-Men Legacy
 * X-Men 2099 (Marvel 2099)
 * X-Nation 2099
 * X-Patrol (Amalgam Comics)
 * X-People
 * X-Statix
 * X-Terminators
 * X-Ternals
 * X-Treme X-Men
 * X-Treme Sanctions Executive

Y

 * Yeti
 * Young Allies
 * Young Avengers
 * Young Gods
 * Young X-Men

Z

 * Zodiac