Hezekiah Leroy Gordon Smith (August 14, 1909 – September 25, 1967), better known as Stuff Smith, was an American jazz violinist. He is well known for the song “If You’re a Viper” (the original title was “You’se a Viper”).

Smith was, along with Stéphane Grappelli, Michel Warlop, Svend Asmussen, Ray Nance and Joe Venuti, one of jazz music’s preeminent violinists of the swing era. He was born in Portsmouth, Ohio, United States in 1909, and studied violin with his father.