Haak is a Dutch surname. It is thought to often be patronymic of origin, referring to a now extinct given name, or, considering the meaning "hook", be toponymic, descriptive or metonymic (e.g. a fish hook referring to a fisherman). People with this surname include: Bob Haak (1916–1992), American football player. Bob Haak (1926–2005), Dutch art historian. Guus Haak (born 1937), Dutch football defender. Howie Haak (1911–1999), American baseball scout. Hugo Haak (born 1991), Dutch track cyclist. Isabelle Haak (born 1999), Swedish volleyball player.
https://en.wikipedia.org/wiki/Haak