Mark Sandman (September 24, 1952 – July 3, 1999) was an American singer, songwriter, musical instrument inventor, multi-instrumentalist and comic writer. He was an indie rock icon and longtime fixture in the Boston/Cambridge music scene, best known as the lead singer and slide bass player of the band Morphine. Sandman was also a member of the blues-rock band Treat Her Right and founder of Hi-n-Dry, a recording studio and independent record label.