Thornton John Kipper (September 27, 1928 – March 29, 2006) was a pitcher in Major League Baseball who played from 1953 through 1955 for the Philadelphia Phillies. Listed at 6 ft 3 in (1.91 m), 190 lb (86 kg), Kipper batted and threw right-handed. He was born in Bagley, Wisconsin and attended Bagley High School. After graduating in 1951, Kipper was signed by the Phillies. In a three-season career, he went 3–4 with 35 strikeouts and a 5.27 ERA in 55 appearances, including three starts, one save, and 99.0 innings of work.