Adam Keefe Horovitz, better known as Ad-Rock or King Ad-Rock, is an American musician, guitarist, rapper, producer, and actor. He is best known as a member of the pioneering hip hop group the Beastie Boys. He is married to musician and feminist activist Kathleen Hanna.
- Born: October 31, 1966 (age 52), Manhattan
- Spouse: Kathleen Hanna (2006 to present - Marriage)Ione Skye (1992 to 1999 - Marriage)
- Aliases: Ad Rock, Ad-Rock, Adam 'Ad-Rock' Horovitz, Adam Horowitz, Adam Keefe Horovitz, Adrock, Beastie Boys, DJ Ad Rock, King Ad-Rock, King Adrock, Shadrach, The Beastie Boys, The Kid, The King Ad-Rock, Vic Colfari
- Height: 5′ 8″ (1.73m)
- Genre: Hip hop music