HMS Hesper was a British Royal Navy 18-gun ship-sloop of the Cormorant class, launched in 1809 at Dartmouth.

Captain George Hoare was appointed to Hesper in 1809,[4] commissioned her in August and sailed for the Indian Ocean on 9 October.

[6] Hesper was detailed for service with the squadron under Admiral Albemarle Bertie engaged in the invasion of Isle de France (Mauritius).

Street commanding, performed a useful reconnaissance taking soundings at night of the anchorage on the coast, a service for which Bertie commended them.

[7] They identified a place in a narrow strait between an islet called the Gunner's Coin and the beach where the fleet could anchor and where boats could land through an opening in the reef.

In September 1814 prize money was paid to the officers and crews of the vessels that had been present at the capture of Isle de France.

Bertie appointed Lieutenant Edward Lloyd to command Hesper and he sailed her back to Bombay with Major-General John Abercrombie and his staff as passengers.

In 1847 the Admiralty authorized the issuance of the Naval General Service Medal with clasp "Java" to all remaining survivors of the campaign.

In February 1812 command passed to Charles Thomas Thurston, who was blown by a storm to Timor, which had been out on contact with Europe for two years.

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