Mr. Lif (born Jeffrey Haynes, December 11, 1977) is a hip-hop artist from Boston, Massachusetts. Often noted for his political lyrics, he has released two studio albums on El-P’s Definitive Jux label and one on Bloodbot Tactical Enterprises.

Mr. Lif is also a member of the hip hop group The Perceptionists with long-time friends and collaborators Akrobatik and DJ Fakts One.

Mr. Lif grew up in the neighborhood of Brighton in Boston, Massachusetts. After attending the Dedham, MA private school Noble and Greenough School, he went on to attend Colgate University for two years, and he eventually dropped out. He became a performer in 1994. Mr. Lif’s family ancestry is Bajan.