Peter Rennert (born December 26, 1958, in Great Neck, New York), is a former professional tennis player from the United States. Rennert enjoyed most of his tennis success while playing doubles. During his career he won 2 doubles titles. He achieved career-high rankings of World No. 40 in singles (in 1980) and World No. 8 in doubles (in 1983). As a player he trained with 25 time Davis Cup Championship Coach Harry Hopman and Wimbledon champion Tony Palafox.