Augustinus Wilhelmus "Guus" Haak (born 17 April 1937) is a Dutch former footballer who played for Feyenoord and was part of their European Cup victory in 1970. He earned 14 caps for the Netherlands national football team. https://web.archive.org/web/20070220004041/http://www.voetbalstats.nl/nedxi/sp176.html