Joost Wichman (born 19 May 1978, Lichtenvoorde) is a Dutch professional mountainbiker, whose main discipline is four-cross (4X).

After a successful career, resulting in 4 National Pro Titles, 2 victories in the European Championship Rounds and a longtime membership of the National BMX Team, he started his 4X career in 2006.

In 2009 he won round 3, 5 and 7 of the UCI Mountain Bike World Cup.

In 2013 he won the 4X UCI World Championship in Leogang, Austria.

Joost is currently sponsored by Radon Bikes, Magura, Thirty7even, IXS, SRAM Corporation, DT Swiss AG, Carbocage, Continental, SR Suntour Inc., Bikeparkitect, Crankbrothers, Fi'zi:k.