The four main sanctioning bodies; IBF, WBA, WBC and WBO recognize 17 weight classes or weight divisions for professional men and women boxers.
Weight Classes or Divisions
- Mini Flyweight (IBF, WBO)
Strawweight (WBC)
Minimumweight (WBA) - Up to and including 105 lbs - Junior Flyweight (IBF, WBO)
Light Flyweight (WBA, WBC) - Over 105 to 108 lbs - Flyweight (IBF, WBA, WBC, WBO) - Over 108 to 112 lbs
- Super Flyweight (WBA, WBC)
Junior Bantamweight (IBF, WBO) - Over 112 to 115 lbs - Bantamweight (IBF, WBA, WBC, WBO) - Over 115 to 118 lbs
- Super Bantamweight (WBA, WBC)
Junior Featherweight (IBF, WBO) - Over 118 to 122 lbs - Featherweight (IBF, WBA, WBC, WBO) - Over 122 to 126 lbs
- Super Featherweight (WBA, WBC)
Junior Lightweight (IBF, WBO) - Over 126 to 130 lbs - Lightweight (IBF, WBA, WBC, WBO) - Over 130 to 135 lbs
- Super Lightweight (WBA, WBC)
Junior Welterweight (IBF, WBO) - Over 135 to 140 lbs - Welterweight (IBF, WBA, WBC, WBO) - Over 140 to 147 lbs
- Super Welterweight (WBA, WBC)
Junior Middleweight (IBF, WBO) - Over 147 to 154 lbs - Middleweight (IBF, WBA, WBC, WBO) - Over 154 to 160 lbs
- Super Middleweight (IBF, WBA, WBC, WBO) - Over 160 to 168 lbs
- Light Heavyweight (IBF, WBA, WBC, WBO) - Over 168 to 175 lbs
- Cruiserweight (WBA, WBC, IBF)
Junior Heavyweight (WBO) - Over 175 to 200 lbs - Heavyweight (IBF, WBA, WBC, WBO) - Over 200 lbs to unlimited
For world champions by weight division see boxing rankings.