Peter Apfelbaum  is an American avant-garde jazz pianisttenor saxophonistdrummer and composer born in Berkeley, California.He first emerged on the jazz scene in the late 1970s, performing with Carla Bley from 1978–1982 and touring with Warren Smith and Karl Berger. Around this time Apfelbaum also studied and worked with musicians involved with the Creative Music Studio in Woodstock, New York. He graduated from Berkeley High School in 1978 in a class that included jazz pianist Benny Green.

Apfelbaum has made an impact on the avant-garde jazz and world music scene since the late 1970s and 1980s. He is a well known multi-instrumentalist and composer. His three main instruments are tenor saxophonepiano, and drums, but he has recorded and performed with a diverse array of percussion, wind, and other instruments. He has composed suites for various artists (including Don Cherry) as well as his 17-piece group The Hieroglyphics Ensemble.