Gianni Lenoci (born 6 June 1963, Monopoli, Italy – died 30 September 2019) was an Italian jazz pianist, composer and educator.

He studied improvisation with Mal Waldron and Paul Bley and composition with Giacomo Manzoni. He performed with Massimo Urbani, Steve Lacy, Joelle Leandre, Steve Grossman, Harold Land, Bob Mover, Enrico Rava, Glenn Ferris, Eugenio Colombo, Giancarlo Schiaffini, Don Moye, Han Bennink, Antonello Salis, Carlo Actis Dato, David Gross, Stephen Heckel, Paul Lovens, Sakis Papadimitriou, Georgia Sylleou, Jean-Jacques Avenel, John Betsch, Markus Stockhausen, Steve Potts, Carlos Zingaro, John Tchicai, Kent Carter, and William Parker among others.

His primary activity was in jazz and contemporary music, but he also collaborated with Latin musicians.