List of boxing quadruple champions List of Boxing Quadruple or Four Division Champions — Major Titles List of Boxing Quadruple or Four Division Champions — Major Titles

| Number_ | Name_ | Titles | Date_ | Opponent | Result_ | Defenses |
|---|---|---|---|---|---|---|
| 7 | Roy Jones Jr. | The Ring Light heavyweight (175) | 2001 | N/A | N/A | 11 |
| 7 | Roy Jones Jr. | WBA Heavyweight (200+) | 2003-03-01 | John Ruiz | UD 12/12 | 0 |
| 8 | Floyd Mayweather, Jr. | WBC Super featherweight (130) | 1998-10-03 | Genaro Hernandez | RTD 8/12 | 8 |
| 8 | Floyd Mayweather, Jr. | Lineal Super featherweight (130) | 1998-10-03 | Genaro Hernandez | RTD 8/12 | 8 |
| 8 | Floyd Mayweather, Jr. | WBC Lightweight (135) | 2002-04-20 | José Luis Castillo | UD 12/12 | 3 |
| 8 | Floyd Mayweather, Jr. | The Ring Lightweight (135) | 2002-04-20 | José Luis Castillo | UD 12/12 | 3 |
| 8 | Floyd Mayweather, Jr. | WBC Super lightweight (140) | 2005-06-25 | Arturo Gatti | TKO 6/12 | 0 |
| 8 | Floyd Mayweather, Jr. | IBF Welterweight (147) | 2006-04-08 | Zab Judah | UD 12/12 | 0 |