Nine ships of the Royal Navy have borne the name HMS Pioneer:
- HMS Pioneer was a 14-gun brig listed 1804–1807.
- HMS Pioneer was a 12-gun cutter launched in 1810. She was converted to a schooner in 1813 and back to a cutter in 1819. She was used as a coastguard vessel from 1824 and sold in 1849.
- HMS Pioneer was a wood screw discovery vessel launched in 1850. She was originally named Eider. She was abandoned in 1854 in the Arctic.
- HMS Pioneer was a wood screw gunvessel launched in 1856. She was broken up in 1865.
- HMS Pioneer was a wood paddle survey vessel transferred from the Colonial Office in 1864. She was sold in 1873.
- HMS Pioneer was a composite paddle vessel launched in 1874. She was broken up in 1888.
- HMS Pioneer was a river gunboat launched in 1892. In 1893 she was dismantled and then re-erected in Lake Nyasa. She was transferred to the British Central Africa government in 1894.
- HMS Pioneer was a Pelorus-class light cruiser launched in 1899. She was transferred to the Royal Australian Navy in 1912 where she became HMAS Pioneer.
- HMS Pioneer was a Colossus-class aircraft carrier launched in 1944. She was originally named Ethalion, then Mars. She was broken up in 1954.