WWE adopted the WCW Cruiserweight Championship as its version of the Cruiserweight Championship.
| Champion | Date | Location | Event |
|---|---|---|---|
 |
|||
| Tajiri | 10/22/01 | Bakersfield, CA | Smackdown! |
| NOTES: Awarded | |||
|
|||
| Billy Kidman | 04/04/02 | Rochester, NY | Smackdown! |
|
|||
| Tajiri (2) | 04/21/02 | Kansas City, MO | Backlash |
|
|||
| The Hurricane | 05/16/02 | Montreal, QUE | Smackdown! |
|
|||
| Jamie Noble | 06/23/02 | Columbus, OH | King of the Ring |
|
|||
| Billy Kidman (2) | 11/17/02 | New York City, NY | Survivor Series |
|
|||
| Matt Hardy | 02/23/03 | Montreal, QUE | No Way Out |
| NOTES: Matt Hardy lost 10 lbs to qualify | |||
|
|||
| Rey Mysterio | 06/05/03 | Anaheim, CA | Smackdown! |
|
|||
| Tajiri (3) | 09/25/03 | Philadelphia, PA | Smackdown! |
|
|||
| Rey Mysterio (2) | 01/01/04 | Laredo, TX | Smackdown! |
|
|||
| Chavo Guerrero | 02/15/04 | San Francisco, CA | No Way Out |
|
|||
| Jacqueline | 05/06/04 | Tucson, AZ | Smackdown! |
| NOTES: In an Open Challenge | |||
|
|||
| Chavo Guerrero (2) | 05/16/04 | Los Angeles, CA | Judgment Day |
| NOTES: With one hand tied behind his back | |||
|
|||
| Chavo Classic | 05/20/04 | Las Vegas, NV | Smackdown! |
| NOTES: Beat Chavo Guerrero and Spike Dudley in a 3-WAY | |||
|
|||
| Rey Mysterio (3) | 06/17/04 | Chicago, IL | Smackdown! |
| NOTES: Chavo Classic’s last match. | |||
|
|||
| Spike Dudley | 07/29/04 | Cincinatti, OH | Smackdown! |
| NOTES: After interference by the Dudley Boyz | |||
|
|||
| Sho Funaki | 12/12/04 | Atlanta, GA | Armageddon |
|
|||
| Chavo Guerrero (3) | 02/20/05 | Pittsburgh, PA | No Way Out |
| NOTES: Won a Gauntlet Match | |||
|
|||
| Paul London | 03/31/05 | Houston, TX | Smackdown! |
| NOTES: Won a Battle Royal | |||
|
|||
| Nunzio | 08/06/05 | Bridgeport, CT | Velocity |
|
|||
| Juventud Guerrera | 10/09/05 | Houston, TX | No Mercy |
|
|||
| Nunzio (2) | 11/15/05 | Rome, Italy | Live Event |
|
|||
| Juventud Guerrera (2) | 11/25/05 | Sheffield, England | Smackdown! |
|
|||
| Kid Kash | 12/18/05 | Providence, RI | Armageddon |
|
|||
| Gregory Helms | 01/29/06 | Miami, FL | Royal Rumble |
| NOTES: Won a Cruiserweight Open | |||
|
|||
| Chavo Guerrero (4) | 02/18/07 | Los Angeles, CA | No Way Out |
| NOTES: Won a Gauntlet Match | |||
|
|||
| Hornswoggle | 07/22/07 | San Jose, CA | Great American Bash |
| NOTES: Hornswoggle was not an official participant. | |||
| NOTES: Hornswoggle was stripped by Vickie Guerrero and the Cruiserweight title was quietly retired. | |||
|
|||