The M/S Maritime Museum of Denmark is a maritime museum located in Helsingør, Denmark. Established in 1915, its collections cover Danish trade and shipping from the 15th century to the present day.
The museum was originally located at Kronborg Castle. In 2013, the museum moved into new underground premises designed by Bjarke Ingels Group around a former dry dock. Until 31 December 2011, the museum was known as Handels- og Søfartsmuseet, which was officially translated as the Danish Maritime Museum.