The Danish Actors' Association (Danish: Dansk Skuespillerforbund, DSF) is a trade union representing actors, dancers, choreographers and opera singers in Denmark. The union was founded in 1904 by Karl Mantzius, as one of the first actors' unions in the world. It initially focused on improving the pay and reducing the working hours of actors, and also on boosting their social status. In 1910, it for the first time signed an agreement with theatre owners in Copenhagen. It now also has agreements covering film and television, and works closely with the Danish copyright organisations.