Paul Vincent Nicholas Haarhuis (born 19 February 1966) is a Dutch tennis coach and a former professional player.

[2] He is best known for his success in doubles with fellow countryman Jacco Eltingh, winning five Grand Slam titles together, although some would say he is best known for his 4 set loss to Jimmy Connors in the 1991 U.S. Open quarterfinals.

He is, together with Sergi Bruguera, Richard Krajicek, Leander Paes, and Michael Stich, one of the players of the same generation with a positive head-to-head record against Pete Sampras: 3–1.

[3] His best Grand Slam singles performance was reaching the quarterfinals of the 1991 US Open, where he defeated Eric Jelen, Andrei Chesnokov, top seed Boris Becker and Carl-Uwe Steeb, before losing to Jimmy Connors.

After retiring, he won the end-of-year Blackrock Masters Tennis tournament in the Royal Albert Hall in 2005 and 2006, beating legends such as Goran Ivanišević and John McEnroe.