Here is one of the biggest lists of Previous Identities I have seen. Any Corrections can be sent to WWFRI@hotmail.com

Name Wrestling Identities
Shawn Michaels AWA: Sean Michaels
Steve Austin WCCW: Steve Williams
USWA/WCW: "Stunning" Steve Austin
ECW: "Superstar" Steve Austin
WWF: The Ringmaster, "Stone Cold" Steve Austin
"The Road Dog" Jesse James WCW: Brian Armstrong
WWF: The Roadie
USWA: Jesse James Armstrong
WWF: Jesse James, "The Road Dog" Jesse Jammes
Mr. Ass IWF: Kip Winchester
WWF: Billy Gunn, RockaBilly, "Bad Ass" Billy Gunn
Owen Hart WWF: The Blue Blazer, "The Rocket" Owen Hart, "The King of Harts" Owen Hart, "The Slammy Award Winning" Owen Hart
LOD2000 WWF: The Legion of Doom
AWA/NWA/WWF: The Road Warriors
Hunter Hearst-Helmsley WCW: Terra Ryzin', Jean-Paul LeVesque
Chyna Independent: Joanie Lee
The Undertaker USWA: The Master of Pain, The Punisher
NWA: "Mean" Mark Callous
WWF: Kane The Undertaker
Jeff Jarrett WCCW/USWA: "Simply Irresistable" Jeff Jarrett
WWF: "Double J" Jeff Jarrett
Tennessee Lee WCW: Col. Robert Parker
USWA/CWA: Robert Fuller
Faarooq NWA/WCW: Ron Simmons
WCW: "The All American" Ron Simmons
WWF: Faarooq Aasad
The Godfather USWA: The Soultaker
WWF: Papa Shango, Kama, Kama Mustafa
D-Lo Brown SMW/WWC: D-Lo Brown
"The Rock" WWF: Rocky Maivia
USWA: Flex Cavana
Vader WCW/Japan: Big Van Vader
AWA: Baby Bull
Buff Bagwell Georgia: Fabian
GWF: The Handsome Stranger
WCW: Marcus Alexander Bagwell
Chris Benoit Japan: The Pegasus Kid, Wild Pegasus
ECW: "The Canadian Crippler" Chris Benoit
WCW: "The Crippler" Chris Benoit
Konnan WWF: Max Moon
WCW: Konan
Lex Luger NWA/WCW/WBF: "The Total Package" Lex Luger
WWF: "The Narcissist" Lex Luger, "Made In The USA" Lex Luger
Meng WWF: King Haku, Haku
Bret Hart WWF: Bret "Hitman" Hart
Bryan Adams PNW: Bryan Adams
WWF: Crush
Randy Savage Independent: The Spider ICW: Randy Poffo
WWF/WCW: "Macho Man" Randy Savage
Barry Windham WCW/NWA/Florida/WWF: Barry Windham,
WWF: "Blackjack" Windham,"The Widowmaker" Barry Windham, "The Stalker" Barry Windham
Florida: The Yellow Dog Independent: BlackJack Mulligan Jr
Booker T. and Stevie Ray WCW: Harlem Heat
GWF: The Ebony Experience
WCW: Kane & Kole
Raven PNW: Scotty the Body
GWF: Scott Anthony
WWF: Johnny Polo
ECW: The Raven
Glacier Independent: "Sugar" Ray Lloyd
Goldberg WCW: A Jobber who LOST to Rowdy Roddy Piper
Hollywood Hogan WCW: Hulk Hogan
WWF: "The Immortal" Hulk Hogan Independent: Terry "The Hulk" Boulder, Hulk Machine, Sterling Golden
Kanyon WCW: Mortis
WWF/WCW: Chris Canyon
Kimberly WCW: The Diamond Doll, The Booty Babe
Rey Mysterio Jr Mexico: Colibri
Ric Flair NWA/WCW/WWF: "The Nature Boy" Ric Flair
Rick Rude WCW/WWF/ECW: "Ravishing" Rick Rude
Scott Putski Texas: Konnan 2000
Scotty Riggs SMW/WCW: Scott Stud
Chris Jericho ECW/WCW: "Lionheart" Chris Jericho
Curt Hennig WWF: Mr. Perfect
Eddy Guerrero Japan: Black Tiger
WCW: Eddie Guerrero
Ahmed Johnson GWF: Moadib
Independent: Siva
The Barbarian WWF: Sionne
Bobby Eaton NWA/WCW: "Beuatiful" Bobby Eaton
WCW: Earl Robert Eaton
The British Bulldog WWF: "The British Bulldog" Davey Boy Smith
Sting Independent: Flash
Ted DiBiase WWF: "The Million Dollar Man" Ted DiBiase
Ultimo Dragon WCW: The Ultimate Dragon
Van Hammer WCW: Hammer
Phil LaFon All Japan/ECW: Dan Kroffat, The Blue Blazer
Kevin Nash WCW: Master Blaster Steele, Oz, Vinnie Vegas
WWF: Diesel
Kidman Independent: Kid Flash
WCW: Billy Kidman
Saturn ECW/WCW: Perry Saturn
Scott Hall Independent: Starship Coyote
WCW: The Diamond Studd
WWF: Razor Ramon
Rocco Rock Japan: The Cheetah KidECW/WCW: "Flyboy" Rocco Rock
The Sultan WCCW/NWA/WWF: Fatu
Hugh Morrus ECW: Crash the Terminator
WCW: The Man of Question
The Iron Sheik WWF: Col. Mustafa
Jim Neidhart WWF: Jim "The Anvil" Neidhart, Who
Ken Shamrock Independent: Vince Torelli
Cactus Jack/Dude Love/Mankind WWF: Jack Foley
Independent: Cactus Jack Manson
WCCW/NWA/WCW/ECW/WWF: Cactus Jack
Chainsaw Charlie WWF/NWA/WCW/ECW: Terry Funk
Goldust NWA/WCW/Florida/WWF: Dustin Rhodes
WWF: The Artist Formerly Known As Goldust
Luna WWF/WCW/ECW/Independents: Luna Vachon
Terri Runnels WWF: Marlena
WCW: Alexandra York
Kane Independet: Christmas Creature
SMW: Unibomb
USWA: Doomsday
WWF: Isaac Yankem DDS, New Diesel
Paul Bearer WCCW/USWA: Percy Pringle
"Marvelous" Marc Mero WCW: Johnny B. Badd
WWF: "Wildman" Marc Mero, "Marvelous" Marc Mero
"Too Sexy" Brian Christopher USWA: Brian Christopher
The Headbangers WWF: The Spiders, The Flying Nuns
Chaz WWF: Headbanger Mosh, Harry "Beaver" Cleavage
Quebecer Jacques WWF/WCW: Jacques Rougeau
WWF: The Mountie
Quebecer Pierre WWF: Jean Pierre LaFitte
WCW: Carl Oulette
Hardcore Holly SMW: "Hollywood" Bob Howard
WWF: Thurman "Sparky" Plugg, Bob "Spark Plug" Holly, Bombastic Bob
Bodacious Bart IWF: Brett Colt
WWF: Bart Gunn, Black Bart
Ricky Morton WCW: Richard Morton
Mark Cantebury WWF: Henry Godwinn
WCW: Shanghai Pierce
Mideon WWF: Phineas Godwinn, Dennis Knight
WCW/USWA: Tex Slazenger
Barry Winhdam WWF: "The Widowmaker" Barry Windham, "The Stalker" Barry Windham
Florida: The Yellow Dog
Independent: BlackJack Mulligan Jr
Bradshaw GWF/CWA: John Hawke
WWF: Justin "Hawk" Bradshaw
Chainz ECW/SMW/Independent: "Prime Time" Brian Lee
ECW: "Bulldozer" Brian Lee
WWF: Ted DiBiase's Undertaker
Tom Brandi WCW/ECW/Independents: Johnny Gunn
WWF: Salvatore Sincere
8 Ball & Skull PNW/ECW: The Bruise Bros
WWF: The Blu Bros, The Grimm Twins
2 Cold Scorpio WCW/ECW/Japan/Mexico: 2 Cold Scorpio
WWF: Flash Funk, Scorpio
Savio Vega WWC: TNT
WWF: Kwang
Jesus Castillo Jr WWC: Hurrican Castillo Jr
Sniper Europe: Rambo
Jerry Lawler AWA/WCCW/USWA/WWF: Jerry "The King" Lawler
Sunny SMW: Tammy Fytch
WWF: Tamara Murphy
ECW: Tammy Lynn Sytch
Tito Santana WWF: El Matador
Johnny Grunge Independent: Johnny Rotten
John Nord PNW: Nord The Barbarian
AWA: "Yukon" John Nord
WWF: The Viking, The Berzerker
Kevin Sullivan NWA: "The Gamesmaster" Kevin Sullivan
WCW: "The Taskmaster" Kevin Sullivan
Louie Spicolli AAA: Madonna's Boyfriend
WWF: Rad Radford
Dok Hendrix NWA/WCCW/WCW/WWF: Michael "PS" Hayes
X-Pac WCW: Syxx
GWF: Lightning Kid
WWF: The Cannonball Kid, The Kamikaze Kid, The Kid, The 1-2-3 Kid
Arn Anderson NWA/WCW: "The Enforcer" Arn Anderson Georgie: Mr. Olympia
Barry Darsow WWF: Demolition Smash, Repo Man
WCW: Blacktop Bully
Madusa AWA/Japan: Madusa Miceli
WWF: Alundra Blayze
Mike Rotunda NWA: Mike Rotunda, Capt. Mike Rotundo
WWF: Mike Rotundo, Irwin R. Shyster
WCW: VK Wall Street, Michael Wall Street, Mr. Wall Street
The Patriot AWA: The Trooper
Vincent Independent: Soultrain Jones
WWF: Virgil
Wrath WWF: Adam Bomb
SMW: The Night Stalker
Al SnowWWF: Leif Cassidy, Shinobi, Avatar
ECW: Al Snow
Golga WWF: Earthquake
WCW: The Shark, Avalanche
Kurrgan WWF: The Interrogator
The Big Bossman WWF: The Big Bossman
WCW: Guardian Angel, Ray Traylor, Big Bubba
Droz WWF: Puke, Darren Drozdov
Mark Henry WWF: "Sexual Chocolate" Mark Henry

Thanks to RajahWWF.com for the above information.