HMS Thornham was one of 93 ships of the Ham-class of inshore minesweepers.

She was converted in 1967 at Rosyth Dockyard for use by the Aberdeen University Naval Unit.

In 1978, HMS Thornham became the first foreign warship to visit the Danish city of Roskilde since the Viking times,[1] when the five Skuldelev ships were sunk in the waterway of Peberrenden, 20 km north of the city.

HMS Thornham gave its ship's bell to Thornham Church in 1969, and it is rung to signal the two minutes' silence on Remembrance Sunday.

This article about a specific naval minesweeper of the United Kingdom is a stub.