WWE adopted the WCW Cruiserweight Championship as its version of the Cruiserweight Championship.
| Champion | Date | Location | Event |
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| Tajiri | 10/22/01 | Bakersfield, CA | SmackDown |
| NOTES: The championship was awarded to Tajiri. | |||
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| Billy Kidman | 04/04/02 | Rochester, NY | SmackDown |
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| Tajiri | 04/21/02 | Kansas City, MO | Backlash |
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| The Hurricane | 05/16/02 | Montreal, Quebec, Canada | SmackDown |
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| Jamie Noble | 06/23/02 | Columbus, OH | King of the Ring |
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| Billy Kidman | 11/17/02 | New York City, NY | Survivor Series |
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| Matt Hardy | 02/23/03 | Montreal, Quebec, Canada | No Way Out |
| NOTES: Matt Hardy lost 10 lbs to qualify | |||
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| Rey Mysterio | 06/05/03 | Anaheim, CA | SmackDown |
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| Tajiri | 09/25/03 | Philadelphia, PA | SmackDown |
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| Rey Mysterio | 01/01/04 | Laredo, TX | SmackDown |
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| Chavo Guerrero | 02/15/04 | San Francisco, CA | No Way Out |
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| Jacqueline | 05/06/04 | Tucson, AZ | SmackDown |
| NOTES: Jacqueline won the title after she answered an ‘Open Challenge’. | |||
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| Chavo Guerrero | 05/16/04 | Los Angeles, CA | Judgment Day |
| NOTES: Chavo competed with one hand tied behind his back. | |||
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| Chavo Classic | 05/20/04 | Las Vegas, NV | SmackDown |
| NOTES: Beat Chavo Guerrero, Jr. and Spike Dudley in a triple threat match. | |||
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| Rey Mysterio | 06/17/04 | Chicago, IL | SmackDown |
| NOTES: This was Chavo Classic’s last match. | |||
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| Spike Dudley | 07/29/04 | Cincinatti, OH | SmackDown |
| NOTES: Won the title after interference by the Dudley Boyz. | |||
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| Sho Funaki | 12/12/04 | Atlanta, GA | Armageddon |
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| Chavo Guerrero | 02/20/05 | Pittsburgh, PA | No Way Out |
| NOTES: Won a Gauntlet Match to win the title. | |||
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| Paul London | 03/31/05 | Houston, TX | SmackDown |
| NOTES: Won a Battle Royal to win the title. | |||
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| Nunzio | 08/06/05 | Bridgeport, CT | Velocity |
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| Juventud Guerrera | 10/09/05 | Houston, TX | No Mercy |
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| Nunzio | 11/15/05 | Rome, Italy | Live Event |
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| Juventud Guerrera | 11/25/05 | Sheffield, England | SmackDown |
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| Kid Kash | 12/18/05 | Providence, RI | Armageddon |
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| Gregory Helms | 01/29/06 | Miami, FL | Royal Rumble |
| NOTES: Won a Cruiserweight Open Invitational match. | |||
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| Chavo Guerrero | 02/18/07 | Los Angeles, CA | No Way Out |
| NOTES: Won a Gauntlet match to win the title. | |||
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| 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. | |||