Pietro Pennisi (born 11 April 1970) is an Italian former professional tennis player.

Born in Florence, Pennisi is the son of Alessandra Gobbò, a tennis player of the 1960s who won a Universiade gold medal for Italy.

His brother Lorenzo was also a tennis player.

[1] Pennisi, a left-handed player, was a doubles runner-up at the 1989 Torneo Internazionali Citta di Firenze.

His best performance in singles was a second round appearance at the Bologna Outdoor in 1995.