The Frans Hals Museum is a hofje and municipal museum in Haarlem, Netherlands, that was established in 1862. In 1950, the museum was split in two locations when the collection of modern art was moved to the Museum De Hallen. The main collection, including its famous 17th-century Frans Hals paintings, for which the museum is named, is located in the former Oude Mannenhuis on the Groot Heiligland.