John Kline is the name of: John Kline (basketball) (fl. 1950s), retired Harlem Globetrotter (1953–1959) who founded the Black Legends of Professional Basketball in 1996 John Kline (politician) (born 1947), American congressman from Minnesota John Robert Kline (1891–1955), American mathematician Johnny Klein (1918–1997), American musician John Kline (elder) (1797-1864), American church elder