HMS Sepoy was a 4-gun Albacore-class gunboat of the Royal Navy launched in 1856 and broken up in 1868.

Sepoy was launched on 13 February 1856 at the North Shields yard of T & W Smith, and commissioned seven weeks later under Lieutenant-in-command Henry Needham Knox.

[2] According to The Times of 12 March 1856, the gunboats Sepoy and Erne left the Tyne in tow of the Cock-o'-the-North, for Woolwich.

[3] She was present at the Fleet Review, Spithead on 23 April the same year, as part of the White Squadron,[4] and paid off at Sheerness on 28 May 1856.

[5] On 10 October 1865, Sepoy was driven ashore and severely damaged at the mouth of the River Tweed.