HMS Admiral Rainier was a Dutch 16-gun brig that the British captured on 23 August 1800 at Kuyper's Island, Java.

[1] [d] Captain Henry Lidgbird Ball of Daedalus ordered her manned, armed, and equipped.

[4] On 28 October Admiral Rainier went up the Carawang river with seven armed boats of the squadron to destroy a depot of grain.

[3] The British carried off three gunboats, together with the commandant's accommodation boat and three large proas laden with coffee.

Between 20 and 28 October 1805 she sailed from Semarang to Batavia under command of lieutenant Louis Quarles van Ufford.

During the night of 28–29 April the Javanese mutinied and murdered the Europeans, throwing their bodies overboard.

[10] Lloyd's List reported that the Indiaman Dover Castle had retaken Admiral Rainer, country-ship, at 3°N 39°E / 3°N 39°E / 3; 39, on 30 December 1806.

[12] The officers and men of the EIC's ships Lord Keith and Dover Castle received salvage money in October 1810 for the recapture of Admiral Rainier on 31 December 1806,[13] as did the crew of Ocean.