HMS Sulphur was a 10-gun Hecla-class bomb vessel of the British Royal Navy, famous as one of the ships in which Edward Belcher explored the Pacific coast of the Americas.

Sulphur was launched in 1826, and in 1829 carried Lieutenant-Colonel Frederick Irwin, officers, passengers and a detachment of troops from the 63rd Regiment of Foot to the Swan River Colony.

Edward Belcher arrived at the port in March 1837 as the new officer and the expedition continued its operations, sailing for the Federal Republic of Central America.

Sulphur reached the capital of Russian America New Archangel, on 11 September where Governor Ivan Kupreyanov greeted the British with a colonial ball.

Bad weather prevented the ship from visited from Fort Vancouver and instead sailed south for Yerba Buena in Alta California.