Tak Terbatas:
WBA: - Heavyweight (Kelas berat)
WBC: - Heavyweight (Kelas berat)
IBF: - Heavyweight (Kelas berat)
WBO: - Heavyweight (Kelas berat)
200 Lb (90.7 Kg)
WBA: - Cruiserweight (Kelas jelajah)
WBC: - Cruiserweight (Kelas jelajah)
IBF: - Cruiserweight (Kelas jelajah)
WBO: - Junior heavyweight (Kelas berat junior)
175 Lb (79.4 Kg)
WBA: - Light heavyweight (Kelas berat ringan)
WBC: - Light heavyweight (Kelas berat ringan)
IBF: - Light heavyweight (Kelas berat ringan)
WBO: - Light heavyweight (Kelas berat ringan)
168 Lb (76.2 Kg)
WBA: - Super middleweight (Kelas menengah super)
WBC: - Super middleweight (Kelas menengah super)
IBF: - Super middleweight (Kelas menengah super)
WBO: - Super middleweight (Kelas menengah super)
160 Lb (72.6 Kg)
WBA: - Middleweight (Kelas menengah)
WBC: - Middleweight (Kelas menengah)
IBF: - Middleweight (Kelas menengah)
WBO: - Middleweight (Kelas menengah)
154 Lb (69.9 Kg)
WBA: - Super welterweight (Kelas welter super)
WBC: - Super welterweight (Kelas welter super)
IBF: - Junior middleweight (Kelas menengah junior)
WBO: - Junior middleweight (Kelas menengah junior)
147 Lb (66.7 Kg)
WBA: - Welterweight (Kelas welter)
WBC: - Welterweight (Kelas welter)
IBF: - Welterweight (Kelas welter)
WBO: - Welterweight (Kelas welter)
140 Lb (63.5 Kg)
WBA: - Super lightweight (Kelas ringan super)
WBC: - Super lightweight (Kelas ringan super)
IBF: - Junior welterweight (Kelas welter junior)
WBO: - Junior welterweight (Kelas welter junior)
135 Lb (61.2 Kg)
WBA: - Lightweight (Kelas ringan)
WBC: - Lightweight (Kelas ringan)
IBF: - Lightweight (Kelas ringan)
WBO: - Lightweight (Kelas ringan)
130 Lb (59.0 Kg)
WBA: - Super featherweight (Kelas bulu super)
WBC: - Super featherweight (Kelas bulu super)
IBF: - Junior lightweight (Kelas ringan junior)
WBO: - Junior lightweight (Kelas ringan junior)
126 Lb (57.2 Kg)
WBA: - Featherweight (Kelas bulu)
WBC: - Featherweight (Kelas bulu)
IBF: - Featherweight (Kelas bulu)
WBO: - Featherweight (Kelas bulu)
122 Lb (55.3 Kg)
WBA: - Super bantamweight (Kelas bantam super)
WBC: - Super bantamweight (Kelas bantam super)
IBF: - Junior featherweight (Kelas bulu junior)
WBO: - Junior featherweight (Kelas bulu junior)
118 Lb (53.5 Kg)
WBA: - Bantamweight (Kelas bantam)
WBC: - Bantamweight (Kelas bantam)
IBF: - Bantamweight (Kelas bantam)
WBO: - Bantamweight (Kelas bantam)
115 Lb (52.2 Kg)
WBA: - Super flyweight (Kelas terbang super)
WBC: - Super flyweight (Kelas terbang super)
IBF: - Junior bantamweight (Kelas bantam junior)
WBO: - Junior bantamweight (Kelas bantam junior)
112 Lb (50.8 Kg)
WBA: - Flyweight (Kelas terbang)
WBC: - Flyweight (Kelas terbang)
IBF: - Flyweight (Kelas terbang)
WBO: - Flyweight (Kelas terbang)
108 Lb (49.0 Kg)
WBA: - Light flyweight (Kelas terbang ringan)
WBC: - Light flyweight (Kelas terbang ringan)
IBF: - Junior flyweight (Kelas terbang junior)
WBO: - Junior flyweight (Kelas terbang junior)
105 Lb (47.6 Kg)
WBA: - Minimumweight
WBC: - Strawweight
IBF: - Mini flyweight (Kelas terbang mini)
WBO: - Mini flyweight (Kelas terbang mini)
80 Lb (40.6 Kg)
WBA: - Paperweight
WBC: - Paperweight
IBF: - Mini Paperweight
WBO: - Mini Paperweight
Sumber referensi: http://www.berbagaihal.com/2011/04/klasifikasi-kelas-dalam-tinju.html