Kassio is a given name. It may refer to:
Kássio Nunes (born 1972), Brazilian magistrate Kassio (footballer, born 1987), Kassio Fernandes Magalhães, Brazilian football centre-back Kassio (footballer, born 1992), Kassio Fernando Rocha Martins, Brazilian football midfielder Kássio (footballer, born 2006), Kássio da Silva de Jesus, Brazilian football winger
See also Cássio (disambiguation)