William Pearl Rhines (March 14, 1869 – January 30, 1922) was a professional baseball player.

He was a pitcher over parts of nine seasons (1890–1899) with the Cincinnati Reds, Louisville Colonels and Pittsburgh Pirates.

For his career, he compiled a 114–103 record in 249 appearances, with a 3.47 ERA and 743 strikeouts.

Billy Rhines - Society for American Baseball Research

This biographical article relating to an American baseball pitcher born in the 1860s is a stub.