Butler "String Beans" May (August 18, 1894 – November 17, 1917) was an American vaudeville performer, singer, pianist and comedian.
He has been described as "the greatest attraction in African-American vaudeville, the first recognizable blues star," and was known "for his streetwise humor, contortive vernacular dancing, and outrageous blues piano playing." He was said to have been the highest-paid black entertainer in the country at the time of his accidental death at the age of 23, and has been claimed as "the model for Jelly Roll [Morton], at least as a stage entertainer and perhaps even as a blues pianist".