Nine ships of the Royal Navy have been named HMS Terror.

• The first five Terrors were small bomb vessels and gunboats of 4 to 14 guns.
• The sixth Terror was a bomb vessel of 10 guns, launched in 1813, and converted to a discovery vessel in 1836. This Terror was one of the ships involved in the bombardment of Fort McHenry in the War of 1812. She and her sister ship Erebus took part in James Clark Ross's expedition to Antarctica from 1839 to 1843. The two ships were converted to screw propulsion in 1844, and took part in John Franklin's expedition to the Arctic in 1845, where they became trapped in ice near King William Island and were abandoned in 1848.
• The seventh Terror was an iron screw floating battery of 16 guns, built in 1856 and sold in 1902.
• The eighth Terror (I03) was a 12-gun Erebus-class monitor launched in 1916. In World War II she served in the Mediterranean, bombarding Axis positions in Libya and carrying water for the British 8th Army. She was sunk by air attack on 1941-02-24
• HMS Terror was also the name of a shore base in Singapore.

References

Royal Navy ship names