Black Ace was the most frequently used stage name of the American Texas blues musician, Babe Kyro Lemon Turner (December 21, 1905 – November 7, 1972), who was also known as B.K. Turner, Black Ace Turner or Babe Turner.

Born in Hughes Springs, Texas, United States, he was raised on the family farm, and taught himself to play guitar, performing in east Texas from the late 1920s on. During the early 1930s he began playing with Smokey Hogg and Oscar "Buddy" Woods, a Hawaiian-style guitarist who played with the instrument flat on his lap. Turner then bought a National steel guitar, and began playing what one later critic called "Hawaii meets the Delta," smooth and simple blues.