HMS Geyser was a Driver-class wooden paddle sloop of the Royal Navy constructed in 1841 and broken up in 1866.

Power for her paddles came from a Seaward & Capel 2-cylinder direct-acting steam engine developing 280 nominal horsepower,[1] which was fitted at Woolwich in May 1841.

[Note 2] Having conducted engine trials in the River Thames, she left Woolwich for Sheerness on 31 October 1841 to be coppered and made ready for sea.

[2] On 16 February 1850 she rescued the survivors of the barque Childe Harold, a passenger ship homeward bound from Australia.

The slaver was sent for adjudication to the Vice-Admiralty Court at St. Helena, and in June 1851 she was sentenced to be restored to her master without costs.