HMS Weazel (frequently spelt Weazle, and occasionally Weasel) was a Royal Navy 18-gun Cruizer-class brig-sloop, launched in 1805 at Topsham, Devon.

Weazle and Euryalus, under Captain Henry Blackwood, watched the port for the exit of the Franco-Spanish fleet, and signaled to Nelson when they did.

She then patrolled Santa Cruz de Tenerife and Madeira, looking for Spanish privateers and men-of-war; subsequently she was stationed between Cape Spartel and Larache.

Clavell was visiting Corfu when word arrived that the island had been transferred from Russian control to France in the Treaty of Tilsit.

[6] Melpomene captured the Turkish vessel Buona Esperanza on 19 July and Bizzaro, on 21 August, with Unité, and Weazel sharing by agreement.

In August 1808 Weazle blockaded a convoy of 38 enemy vessels, of which four were large gunboats, in the port of Diamante, Calabria, south of the Gulf of Policastro, where they were protected by gun boats and a shore battery.

[11] Lieutenant General John Stuart, commander of British forces in Sicily, detached Lieutenant Colonel Alexander Bryce of the Royal Engineers, together with 250 troops from the Regiment of Malta, 150 troops from the 58th Regiment of Foot, 50 men of the German Legion, and an artillery detachment of two 6-pounder guns and a howitzer.

The naval force consisted of Weazle, Halcyon, and a Sicilian galiot under the command of the Chevalier de Balsamo.

Bryce reported that the town was well-situated for defence as it stood on a peninsula that was nearly inaccessible on three sides, the fourth was protected by "difficult Inclosures", and a building of "considerable Strength" commanded the whole.

The gun-boats and other armed vessels, under the command of Capitaine de frégate Caraccioli, drew themselves up in a line for the protection of the former.

In 1847, the Admiralty awarded the NGSM with clasp "Amanthea 25 July 1810" to the 23 surviving members of the British crews that claimed it.

The privateer was the Roi de Rome (or Re di Roma), armed with ten guns and carrying a crew of 46 men.

[17] On 16 February 1812, Weazel, commanded now by John William Andrew, joined the ship of the line Victorious off the harbour of Venice.

[3] On 21 December Apollo and Weazle chased a trabaccolo until it took shelter under the tower of St. Cataldo, reputedly the strongest on the coast between Brindisi and Otranto.

[23][h] Weazel remained in the Adriatic into 1813, assisting George Cadogan in Havannah in his raiding campaign on the Italian coast.

On 6 January 1813, the boats of Bacchante and Weazle captured five armed French vessels sailing from Corfu to Otranto to convoy the payment for the troops on the island.

[l] On 22 April, Weazle was four miles ENE of the island of Zirona when she encountered a convoy close to the shore, making for the ports of Tran and Spalatro.

Weazle gave chase, but the convoy split up, most of the vessels, including ten gunboats, heading for Boscaline Bay, between Tran and Marina.

The next morning the action resumed as Weazle, holed, taking on water, and with all her sails and rigging destroyed, slowly attempted to warp out of range.

Rear Admiral Thomas Fremantle, who commanded British naval forces in the Adriatic, sent Weazle and the gun-brig Haughty after them.

[33] During the night of 4 August, Milford and Weazel put a landing party ashore on the back of the island of Ragonicz, off the Dalmatian coast.

Between 18 and 31 October, a British squadron, consisting of Milford, Eagle, Tremendous, Mermaid, Wizard, and Weazel joined a force of 1500 Austrians to besiege Trieste.

[36] In November, Havannah, which had been attached to Freemantle's squadron, was detached to take the port of Zara with the assistance of Weazle.

The Emperor of Austria, however, awarded Lieutenant Hamley the Imperial Austrian Order of Leopold for his services at Zara.