RNAS Howden (later RAF Howden) was an airship station near the town of Howden 15 miles (24 km) south-east of York, England. It was opened in March 1916 to cover the East Coast ports shipping from attacks by German U-boats during the First World War, with its first airship, the Coastal-class non-rigid airship arriving on 26 June 1916. From 1916 to 1918 Howden was a Royal Naval Air Service establishment, with the base transferring to the Royal Air Force when it was established on 1 April 1918.