Cassiano Schalch Leal (born 31 December 1971 in Piracicaba, São Paulo) is a former international freestyle swimmer from Brazil.

[1] At the 1991 Pan American Games, in Havana, Leal won the silver medal in the 4×200-metre freestyle.

[2] Leal was at the 1993 FINA World Swimming Championships (25 m), in Palma de Mallorca, where he won the bronze medal in the 4×200-metre freestyle, along with José Carlos Souza, Teófilo Ferreira and Gustavo Borges (breaking the South American record with a time of 7:09.38).

At the 1995 Pan American Games, in Mar del Plata, Leal won for the second time the silver medal in the 4×200-metre freestyle.

[6] Participating at the 1995 FINA World Swimming Championships (25 m), in Rio de Janeiro, Leal won again the bronze medal in the 4×200-metre freestyle, now along with Fernando Saez, Teófilo Ferreira and Gustavo Borges.