Loof or Lööf (Swedish variant) is a Germanic surname that may refer to:
Anders Lööf (born 1961), Swedish male curler Annie Lööf (born 1983), Swedish politician Annika Lööf (born 1966), Swedish female curler Augustine Loof (born 1996), Dutch football player Dajana Lööf (born 1983), Swedish singer, songwriter and TV-host Ernst Loof (1907–1956), German automotive engineer and racing driver Fredrik Lööf (born 1969), Swedish sailor Jan Lööf (born 1940), Swedish illustrator, author, comic creator, and jazz musician Leo Lööf (born 2002), Swedish ice hockey player Romain De Loof (born 1941), Belgian cyclist Simon Lööf (born 1996), Swedish actor Ylva Lööf (born 1958), Swedish actress A Spam-like kosher variant of corned beef