Willem Janssen (born 4 July 1986) is a Dutch professional football official and a former player who played as a central defender.

Born in Nijmegen, Janssen made his professional debut for VVV-Venlo in the 2004–05 season, before signing for Roda JC in 2007.

In November 2010, it was announced that Janssen would move to FC Twente at the end of the 2010–11 season, on a free transfer.

[1] In August 2013, Janssen was sent on loan at FC Utrecht for the remainder of the season.

This biographical article related to association football in the Netherlands, about a midfielder, is a stub.