Martin Willem Verkerk (born 31 October 1978) is a retired professional Dutch tennis player.
As a relatively unknown player, he reached the final of the French Open in 2003, which he lost to Spaniard Juan Carlos Ferrero.
Along the way, he beat Željko Krajan, Luis Horna, Vince Spadea and Rainer Schüttler before beating experienced clay court players Carlos Moyá and Guillermo Coria.His unexpected run at the French Open as an underdog and his expressive on-court antics made him popular in the Netherlands.
The final was watched by even more households in the Netherlands than when his countryman Richard Krajicek won Wimbledon in 1996.
However, plagued by various injuries and mononucleosis, Verkerk did not reproduce similar results during the rest of his career, never advancing beyond the third round in subsequent Grand Slams.
During his career, he won two titles and reached the quarter-finals of the 2003 Rome Masters.
Verkerk played a close match against Roger Federer at the 2003 Paris Masters, losing in three tiebreak sets after holding multiple matchpoints.