Peter Rennert (born December 26, 1958) is a former professional tennis player from the United States.

[1][2] He attended and played tennis for Great Neck North High School, and in 1976 won the singles title at the New York State Public High School Athletic Association's tennis championships.

At the 1977 Maccabiah Games in Israel, he and partner Joel Ross won the men's doubles gold medal.

[5] He and Stacy Margolin won the gold medal in mixed doubles, defeating South Africa's Ilana Kloss and Graham Silverman.

His best result as a singles player in a major was making it to the quarterfinals of the Australian Open twice.