Giampiero Fossati (born 13 April 1944) is a retired Italian butterfly swimmer.

He competed at the 1960, 1964 and 1968 Olympics with the best result of seventh place in the 4 × 100 m medley relay in 1964.

He never reached a final in his individual events.

[1] Fossati won two gold medals at the Mediterranean Games in the medley relay.

This biographical article related to an Italian swimmer is a stub.