Bas van der Valk (born 25 April 1984) is a former professional tennis player from the Netherlands.

Born in Delft, van der Valk had success as a junior, with a title win at the 2002 US Open, partnering with countryman Michel Koning in the boys' doubles event.

[1] He had made his only main draw appearance on the ATP Tour earlier in 2002 at the Ordina Open in Rosmalen, where he and Koning were a wildcard pairing in the doubles and made the quarter-finals by beating fourth seeds Michael Hill and Daniel Vacek.

[2] A left-handed player, he continued to play on tour until 2010, reaching a best ranking in doubles of 428 in the world.

He won eight ITF doubles titles and was a doubles runner-up at the Alphen Challenger in his final season.