Keith Edward Diepraam (born 11 September 1942) is a retired South African male tennis player.

Diepraam started playing tennis at age 15 when he went to Glenwood High School in Durban, South Africa.

Between 1964 and 1966 Diepraam played seven ties for the South African Davis Cup team and compiled a record of 20 wins and 12 losses.

In 1965 and 1966 South Africa reached the final of the Europe zone but lost to Spain and West Germany respectively.

[3][4] In 2009 he was inducted into the Texas Tennis Hall of Fame.