Muay Thai Weight Classes for Youth
| Youth Atom Weight |
62 & under |
| Youth Fly Weight |
62.1-67 |
| Youth Bantam Weight |
67.1-72 |
| Youth Feather Weight |
72.1-77 |
| Youth Light Weight |
77.1-82 |
| Youth Welter Weight |
82.1-87 |
| Youth Middle Weight |
87.1-92 |
| Youth Light Heavy Weight |
92.1-97 |
| Youth Cruiser Weight |
97.1-102 |
| Youth Heavy Weight |
102.1-107 |
Muay Thai Weight Classes
for Men, Women and Youth
| Junior Flyweight |
108-111 |
| Flyweight |
112-114 |
| Junior Bantanweight |
115-117 |
| Bantanweight |
118-121 |
| Junior Featherweight |
122-125 |
| Featherweight |
126-129 |
| Junior Lightweight |
130-134 |
| Lightweight |
135-139 |
| Junior Welterweight |
140-146 |
| Welterweight |
147-153 |
| Junior Middleweight |
154-159 |
| Middleweight |
160-167 |
| Super Middleweight |
168-174 |
| Light Heavyweight |
175-189 |
| Cruiserweight |
190-219 |
| Heavyweight |
220-264 |
| Super Heavyweight |
265-280 |
| Maximum Weight |
Over 281 |