The 2011 Men's World Open Squash Championship is the men's edition of the 2011 World Open, which serves as the individual world championship for squash players. The event took place at the squash club Victoria Squash Rotterdam and at the Luxor Theater in Rotterdam in the Netherlands from 1 to 6 November 2011. Nick Matthew successfully defended his title, defeating Grégory Gaultier in the final.

James Willstrop is an English professional squash player from Yorkshire.