Willy Janssen (born 19 February 1960) is a Dutch former professional footballer who played as a defender.
Born in Sittard, Janssen played for PSV and NAC Breda. Janssen suffered from injuries during his career.
He made 1 appearance for the Netherlands national team in 1981. That game was a friendly match against Switzerland on 1 September 1981 which also saw the international debuts of Ruud Gullit, Frank Rijkaard and Wim Kieft.
Janssen later worked as a software developer. His son Tim Janssen was also a professional footballer.