J-L
| Luchador | Entrenador |
| J.C. Bailey | Tracy Smothers |
| Jack Evans | Bryan "Chico" Alvarez y The Hart Brothers |
| James Storm | Slash |
| Jamie Noble | Bill Weaver |
| Jay Briscoe | CZW Training School, ECWA's Wrestletech, Glenn Osbourne y Jon Dahmer |
| Jay Lethal | JAPW School y Mikey Whipwreck |
| Jeff Hardy | Dory Funk Jr. |
| Jeff Jarrett | Jerry Jarrett |
| Jeremy Lopez | Dean Malenko |
| Jeremy V | Stone Mountain |
| Jerrelle Clark | Jeremy McCulough |
| Jerry Flynn | Dean Malenko |
| Jerry Lawler | Jackie Fargo |
| Jerry Lynn | Brad Rheingans |
| Jigsaw | Chikara Training |
| Jim Duggan | Fritz Von Erich |
| Jim Neidhart | Stu Hart |
| Jimmy Jacobs | El Tejano |
| Jimmy Rave | Murder One |
| Jimmy Wang Yang | Paul Orndoff |
| Jody Fleisch | Dino Scarlo y Michinoku Pro Dojo |
| Joel Máximo | Mikey Whipwreck |
| Joey Abs | MCW y OMEGA |
| Joey Matthews | Jimmy Cicero |
| John Bradshaw Layfield | Brad Rheingans |
| John Cena | UPW |
| John Kronus | Killer Kowalski |
| John Morrison | Al Snow, Bill Bemott e Ivory |
| John Walters | Killer Kowalski y Mike Hollow |
| Johnny Ace | Nelson Royal |
| Johnny Kashmere | The Pittbulls |
| Johnny Swinger | Sweet Daddy Siki |
| Joker | Jon Dahmer y Mike Quackenbush |
| Jonny Storm | Dino Scarlo |
| Jorge Estrada | Dusty Rhodes |
| José Máximo | Mikey Whipwreck |
| Josh Daniels | Kevin Knight |
| Josh Prohibition | JT Lightning |
| Julio Dinero | Baltimore Monster Factory |
| Jushin Liger | Kotetsu Yamamoto |
| Justice Pain | Mr. Motion y Zandig |
| Justin Credible | Hart Brothers' Training Camp |
| Juventud Guerrera | Cacique Mara, Fuerza Guerrera y Pepe Casas |
| Kane | Dean Malenko y Ray Candy |
| Karl Gotch | Billy Reilly |
| Kaz Hayashi | Ultimo Dragon |
| Kazushi Miyamoto | AJPW, Johnny Smith, Toshiaki Kawada y Yoshiaki Fujiwara |
| Keiji Mutoh | Hiro Matsuda y New Japan Wrestling Academy |
| Ken Patera | Verne Gagne |
| Ken Shamrock | Buzz Sawyer y Nelson Royal |
| Kenny Dykstra | Killer Kowalsky y OVW |
| Kentaro Shiga | Giant Baba y Tamon Honda |
| Kerry Von Erich | Fritz Von Erich |
| Kevin Steen | Pierre Carl Ouellete |
| Kevin Thorn | OVW |
| Kevin Von Erich | Fritz Von Erich |
| Kid Kash | Ricky Morton |
| Kid Romeo | WCW Power Plant |
| Kip James | Jerry Gray |
| Kishi | Afa y Sika |
| Kofi Kingston | Chaotic Wrestling, DSW y OVW |
| Koji Kanemoto | Masanobu Kurisu |
| Konnan | Negro Casas, Rey Mysterio Sr. y Super Astro |
| Kurrgan | Bret Hart y Leo Burke |
| Kurt Angle | Dory Funk Jr. y Tom Prichard |
| L.A. Park | Alberto Mora y Raúl Reyes |
| La Fiera | Hércules Poblano |
| Lance Cade | OVW y Shawn Michaels |
| Lance Hoyt | Solo Fiatala |
| Lance Storm | Keith Hart |
| Lash LeRoux | WCW Power Plant |
| Latin Lover | Blue Fish, El Vasco y Shibata |
| Lex Luger | Bob Roop y Hiro Matsuda |
| Love Machine | Roddy Piper y Sandy Barr |
| Lou Thesz | Ad Santel y George Tragos |
| Low Ki | Homicide y Jim Kettner |
| Luis Ortiz | Mike Hollow |
| Luther Reings | Navajo Warrior, UPW y WCW Power Plant |