Greg Whitecross (born 15 March 1961) is a former professional tennis player from Australia.

Whitecross was the boys' singles champion at the 1979 Australian Open, defeating Craig Miller in the final.

[3] The closest he came was in the 1982 Australian Open when he lost to Damir Keretić in five sets, after claiming the first two.

[3] In 1982, he had wins over Mike Leach and Jeff Borowiak, before exiting at the quarter-final stage, to Broderick Dyke.

[3] At the South Australian Open the following year, he made the doubles semi-finals, with partner Mark Lewis.