T. J. Middleton (born May 2, 1968) is a former professional tennis player from the United States.

Middleton attended the University of Georgia where he helped lead the Bulldogs to the 1987 National Championship.

He turned professional in 1990 and had a career that spanned 10 years before his retirement at the end of 2000.

A doubles specialist, he achieved a career high singles ranking of world No.

Middleton did not win any senior doubles titles but reached the final on four separate occasions, at Casablanca in 1992, Long Island (1997), Marseille (1998) and Boston (1999).