Frew Donald McMillan (born 20 May 1942) is a former professional tennis player from South Africa who won five grand slam doubles titles including three Wimbledons with Bob Hewitt.

All together, he won 63 doubles titles, surpassed only by the Bryan brothers, Daniel Nestor, Mark Woodforde, Todd Woodbridge, John McEnroe and Tom Okker.

[3][4] At the time, the South African, Italian and German Opens were rated the top three tournaments beneath the Grand Slams.

They made a last appearance together in the main draw at Flushing Meadows in 1980 reaching the quarter-finals with a nostalgic victory over fellow veteran Americans Clark Graebner and Charlie Pasarell.

McMillan played for many years on the seniors tours and was runner-up at the inaugural "Wimbledon over 35's" to John Newcombe in 1982 after good wins against Tony Roche, Mark Cox and Ismail El Shafei.