Suicidal Tendencies are an American hardcore punk band, formed in 1982 in Venice, California.

Singer and songwriter Mike Muir (a.k.a. "Cyco Miko") has been the only constant member. Sometimes regarded as the progenitors of skate punk, they later incorporated significant heavy metal, thrash metal, and even funk and hip hop elements into their sound.

The band's name was inspired by information about the then local state-run insane asylum, which presently stands as California State University Channel Islands.