Peter Mensch (born March 28, 1953) is an American music manager. He started his career in music management at the age of 26, managing AC/DC. In 1982, Mensch formed the management company Q Prime with Cliff Burnstein. Their first client was Def Leppard. Q Prime manages the careers of many multiplatinum acts including Metallica and Red Hot Chili Peppers, Muse, Smashing Pumpkins, Hole, Veruca Salt, Snow Patrol, Lost Prophets Jimmy Page. The Financial Times has called Q Prime "one of the most admired artist management companies".