HNoMS Nor was a Vale-class Rendel gunboat built for the Royal Norwegian Navy at Horten Naval Yard in 1878.

Later Nor and her sister ships was rebuilt as mine layers, and she served in this role when the Germans invaded in 1940.

She was captured by German forces on 14 April 1940, and returned to Norway after the war.

After being decommissioned in 1945 the ship was sold to a civilian company in 1949, converted to a salvage ship/tug and renamed Flatholm.

This article about a specific military ship or boat of Norway is a stub.