Booker Telleferro Ervin II (October 31, 1930 – August 31, 1970) was an American tenor saxophone player. His tenor playing was characterised by a strong, tough sound and blues/gospel phrasing. He is remembered for his association with bassist Charles Mingus.

Ervin was born in Denison, Texas, United States. He first learned to play trombone at a young age from his father, who played the instrument with Buddy Tate.After leaving school, Ervin joined the United States Air Force, stationed in Okinawa, during which time he taught himself tenor saxophone. After completing his service in 1953, he studied at Berklee College of Music in Boston, Massachusetts. Moving to Tulsa in 1954, he played with the band of Ernie Fields.

After stays in Denver and Pittsburgh, Ervin moved to New York City in spring 1958, initially working a day job and playing jam sessions at night. Ervin then worked with Charles Mingus regularly from late 1958 to 1960, rejoining various outfits led by the bassist at various times up to autumn 1964, when he departed for Europe. During the mid-1960s, Ervin led his own quartet, recording for Prestige Records with, among others, ex-Mingus associate pianist Jaki Byard, along with bassist Richard Davis and Alan Dawson on drums. Ervin died of kidney disease in New York City in 1970, aged 39. Most biographical accounts of Ervin’s death give an incorrect date. His gravestone in The National Cemetery, East Farmingdale, New York, clearly shows the date as August 31, 1970.