HMS Despatch (1812) was an 18-gun Cruizer-class brig-sloop launched in 1812 and sold in 1836. She burnt at sea on 11 March 1839.
HMS Dispatch (1816) was a 6-gun brig-storeship transferred from the Transport Office c. 1816. She was hulked in 1820, used as a sheer hulk from 1826 and wrecked in 1846. She was ordered to be broken up, but remained listed until 1865.
HMS Despatch (1851) was a 12-gun brig launched in 1851. She became Watch Vessel No. 24 under the name HMS Cadmus in 1863, and was sold in 1901.