Karel Koželuh (March 7, 1895 – April 27, 1950) was a top Czech tennis, football, and ice hockey player during the 1920s and 1930s. Koželuh never played in the major tournaments of amateur tennis but was an all-around athlete at the highest level. He played international football for both Austria and Czechoslovakia. He won four Pro Slam tournaments in tennis and was inducted into the International Tennis Hall of Fame in Newport, Rhode Island, in 2006. Koželuh was killed in a car accident outside Prague on 27 April 1950.