Mario Prosperi (born 4 August 1945 in Melide) is a retired Swiss football goalkeeper.
He got 21 caps for Switzerland between 26 May 1965 and 9 May 1973.
He was an unused substitute at the 1966 World Cup.
He played in qualifying games for both the 1970 FIFA World Cup and 1974 FIFA World Cup.
This biographical article related to a football goalkeeper from Switzerland is a stub.