Jeff Parker (born April 4, 1967) is an American jazz and rock guitarist based in Los Angeles. Parker is best known as an experimental musician, working with avant-garde electronic, rock, and improvisational groups.
Parker plays guitar in the post-rock group Tortoise and was a founding member of Isotope 217 and the Chicago Underground Trio in the 1990s and early 2000s. He is a member of the Association for the Advancement of Creative Musicians (AACM) and has worked with George Lewis, Ernest Dawkins, Brian Blade, Joshua Redman, Fred Anderson, and Jason Moran. He has released four solo albums: Like-Coping, The Relatives, Bright Light in Winter, and The New Breed.