Patrick Zimmerli (born July 23, 1968) is an American saxophonist, composer, arranger, and record producer.

His work has been performed at Carnegie Hall and Town Hall in New York, Wigmore Hall in London and Salle Pleyel in Paris, as well as at the Guggenheim Museum and the Museum of Modern Art. His pieces have been featured in the Seattle Chamber Music Festival, the Colorado Music Festival, the Bravo! Vail Valley Music Festival and Festival Mozaic in San Luis Obispo, California.

Notable musicians and ensembles who have commissioned or performed Zimmerli's music include Brooklyn Rider, the Knights Chamber Orchestra, the New York Classical Players, flutist Jasmine Choi, violinist Timothy Fain, pianist Anne-Marie McDermott, cellists Kristina Reiko Cooper and Brian Thornton, the Ying and Escher string quartets and the St. Paul Chamber Orchestra.

In addition to his work in the classical realm, Zimmerli has collaborated with dozens of jazz musicians over the course of his career, including Brad Mehldau, Kevin Hays, Joshua Redman, Brian Blade, Ben Monder, Larry Grenadier, Satoshi Takeishi, John Hollenbeck, Jeff Williams and Tom Rainey, as well as Ethan Iverson and Reid Anderson of The Bad Plus. In 1993, he won first prize in the first annual BMI/Thelonious Monk Composer's Competition,