| Claudio Calasans | |
| Birth Date: | October 11, 1983 |
| Birth Place: | São José dos Campos, Brazil |
| Team: | ATOS |
| Rank: | Black belt in Brazilian Jiu-Jitsu under Erivaldo Junior |
| Weight Class: | Middleweight |
Claudio Calasans (born in São Paulo, Brazil) is a Brazilian Jiu Jitsu (BJJ) world champion and ADCC Absolute champion.