HMS Elfin (pennant number T25) was a torpedo recovery vessel built for the Royal Navy.

She was built by J. Samuel White & Company, East Cowes, Isle of Wight, was launched on 20 November 1933 and commissioned on 16 January 1934.

Her home port was the Navy's torpedo trials establishment HMS Vernon, and she was based at Portland.

She was replaced by the drifter Rotha in 1941 and transferred to the Clyde, being renamed HMS Nettle on 20 August 1941 and assigned pennant number T94.

Converted to a tanker cleaning vessel, she continued in service for the ADM in Amsterdam harbour until 1985 as Droogdok 18, HOM7 and TCA1.