Guido van der Valk (born 26 January 1980) is a Dutch professional golfer.

In 2007 he just missed out on retaining his card by finishing one place out at 61st in the Order of Merit; Thammanoon Sriroj in 60th earned just $455 more.

However, van der Valk rectified this the following year by enjoying his most successful Asian season to date in 2008, finishing 52nd on the Order of Merit.

In 2011, van der Valk posted his best result to date on the Asian Tour, losing out in a five-man playoff to Himmat Rai at the ISPS Handa Singapore Classic.

[3] Going into the final event of the main tour season, the Thailand Golf Championship, he was 83rd on the Order of Merit, but he finished T6th to climb to 59th and retain his card.