Colin Long (3 March 1918 – 8 November 2009) was an Australian tennis player.

He had a notable mixed doubles partnership with fellow Australian Nancye Wynne Bolton.

In singles, he reached the quarterfinals of the Australian four times (1947, 1948, 1949 and 1950) and the fourth round of both Wimbledon and the U.S. Nationals in 1947.

[1] He was a lieutenant in the AIF in World War II, serving in the Middle East.

[1] He worked for Dunlop Sport before joining Spalding, where he became deputy chief executive.