Fernando de Oliveira Saez (born 2 October 1974 in Rio de Janeiro) is a former international freestyle swimmer from Brazil.

He participated for his native country at the 1996 Summer Olympics.

[4] He was a swimming athlete for the Fluminense when he won the silver medal at the 1995 Pan American Games in Mar del Plata, in the 4x200 meter freestyle relay.

[4] At the 1995 FINA World Swimming Championships (25 m) done in Rio de Janeiro, he won the bronze medal in the 4×200-metre freestyle.

Saez participated in the 2000 FINA World Swimming Championships (25 m), in Athens, where he finished 8th in the 4×200-metre freestyle final.