Nicolas Mahut (born January 21 1982 in Angers) is a French tennis player. Mahut is right-handed and has previously won the Orange Bowl in 1999, becoming professional in 2000. He is a good serve and volleyer and a doubles expert, having won many tournaments with his doubles partner Julien Benneteau. His career high was #40, achieved on February 18, 2008.

At the 2007 Queen's Club Championships, Mahut defeated both fifth-seed Ivan Ljubičić and top-seed Rafael Nadal in straight sets, and on the same day, to reach the semi-finals, where he beat compatriot Arnaud Clement. He lost in 3 sets 4-6, 7-6 (7), 7-6 (2) to Andy Roddick in his first ATP final after holding one match-point in the second set tiebreak.

On June 21 2007, Mahut defeated Simon Stadler of Germany to qualify for the first round proper of the Wimbledon Tennis Championships. However, after winning the first round, his second match in three weeks against Clement, he lost in the second round to fellow Frenchman Richard Gasquet, possibly succumbing to tiredness.