Ten ships of the Royal Navy have been named HMS Aetna or HMS Etna, after the volcano Etna:
HMS Aetna (1691) was an 8-gun fireship launched in 1691 and captured by the French in 1697.
HMS Aetna (1739) was an 8-gun fireship purchased in 1739 and sold in 1746.
HMS Etna (1756) was an 8-gun fireship purchased in 1756. She was converted into a sloop later that year and was sold in 1763.
HMS Etna (1771) was an 8-gun fireship purchased in 1771. She was renamed HMS Scorpion and converted into a sloop later that year and was sold in 1780.
HMS Aetna (1776) was an 8-gun bomb vessel launched in 1776 and broken up in 1784.
HMS Aetna (or Etna) was a French 20-gun Etna-class corvette that HMS Melampus and HMS Childers captured from the French in 1796. The Royal Navy rated her as a sixth rate and renamed her HMS Cormorant in 1797; she was wrecked in 1800.
HMS Aetna (1803) was an 8-gun bomb vessel purchased in 1803 and sold in 1816.
HMS Aetna (1824) was a 6-gun bomb vessel launched in 1824. She was converted to a survey ship in 1826 and was sold in 1846.
HMS Aetna (1855) was a 14-gun Aetna class ironclad screw floating battery. She was laid down in 1854, but caught fire and launched herself in 1855. She was broken up on the riverbank.
HMS Aetna (1856) was a 16-gun lengthened Aetna class screw ironclad floating battery launched in 1856. She was used for harbour service from 1866, was burnt out in 1873 and broken up in 1874.
