John Cashman may refer to: John Cashman (basketball) (1892–1949), American basketball coach active in 1920s John Cashman (1890s hurler), Irish hurler for Blackrock and Cork John Cashman (hurler, born 1997), Irish hurler for Blackrock and Cork John Cashman (journalist) (1917–1945), American war correspondent killed in a plane crash John Cashman (rower) (born 1972), American rower John E. Cashman, Boeing 777 chief test pilot John E. Cashman (1865–1946), Wisconsin politician