Martijn Bok (born 8 March 1973) is a retired Dutch tennis player.
Bok has a career high ATP singles ranking of 212 achieved on 22 May 1995. He also has a career high doubles ranking of 204 achieved on 16 October 1995.
Bok has won 1 ATP Challenger doubles title at the 1995 Seville Challenger.
Bok is the current coach of Petra MartiÃÂ, tennis professional from Croatia.