Phil Lyne (born January 18, 1947) is an American former professional rodeo cowboy who competed in the Rodeo Cowboys Association (RCA)/Professional Rodeo Cowboys Association (PRCA). Lyne was the RCA Rookie of the Year in 1969. Two seasons later at the National Finals Rodeo (NFR), in 1971, he won the all-around cowboy world championship and the tie-down roping world championship. At the NFR in 1972, he repeated as the all-around world champion cowboy and added a second tie-down roping world championship. Lyne won his first and only steer roping world championship at the National Finals Steer Roping (NFSR) in 1990. He was inducted into the ProRodeo Hall of Fame in 1979.