Het Slaakhuis is a squat in Rotterdam, the Netherlands. It is located on a street called Slaak and was squatted in May 2003. Initially the space hosted film nights, workshops, parties and a cafe. There was a free shop and lessons were taught in Dutch and kung fu.
The building is a six-storey office block, which was formerly the headquarters of a socialist newspaper, Het Vrije Volk. It was built in 1955.
Since 2006, the squatters have been in negotiation with the owner (PWS) and the city council about the Slaakhuis being used as the base for a community art education project.
In 2007, it was declared a national monument.