Mike Post (born Leland Michael Postil) is an American composer, best known for his television theme music for various shows, including The White Shadow; Law & Order; Law & Order: Special Victims Unit; The A-Team; The Byrds of Paradise; NYPD Blue; Renegade; The Rockford Files; L.A. Law; Quantum Leap; Magnum, P.I.; and Hill Street Blues. He was also the producer of the Van Halen III album by the band Van Halen.