Hofsta is a mansion in Björkvik parish Katrineholm Municipality, Södermanland, Sweden. Hofsta manor is situated on the southern shore of Lake Yngaren. The manor house from the 17th century is probably today the main building which got its current design in 1746. The inner wings are from the 17th century. The west wing ground floor comes from the 15th century. The other four wings are from a later period. The estate was used as a filming location for David Fincher's 2011 film The Girl with the Dragon Tattoo.