Niki Sullivan (June 23, 1937 – April 6, 2004) was an American rock and roll guitar player, born in South Gate, California. He was one of the three original members of Buddy Holly's backing band, The Crickets. Though he lost interest within a year or two of his involvement, his guitar playing was an integral part of Holly's early success. He performed on 27 of the 32 songs Holly recorded over his brief career. He co-wrote a number of his own songs.