Peter Joseph Brennan (September 23, 1936 – June 8, 2012) was an American basketball player.

He played one season in the National Basketball Association (NBA) for the New York Knicks.

He played collegiately for the University of North Carolina, where he was chosen ACC Men's Basketball Player of the Year in the 1957–58 season.

Brennan died of prostate cancer on June 8, 2012, in Durham, North Carolina.

This biographical article relating to a United States basketball player, coach, or other figure born in the 1930s is a stub.