Nine ships of the Royal Navy have been named HMS Severn after the River Severn:

• The first HMS Severn (1695) was a 50-gun fourth rate launched in 1695, rebuilt in 1739, captured by the French in 1746, and recaptured by the Royal Navy in 1747 but not taken back into service.
• The second HMS Severn (1747) was a 50-gun fourth rate launched in 1747 and sold in 1759.
• The next HMS Severn was to have been a 38-gun fifth rate. She was renamed HMS Tagus before her launch.
• The third HMS Severn (1786) was a 44-gun Adventure-class fifth rate launched in 1786 and wrecked in 1804.
• The fourth HMS Severn (1813) was a 40-gun Endymion-class fourth rate launched in 1813 and sold in 1825.
• The next HMS Severn was to have been a 46-gun fifth rate. She was ordered in 1825 but cancelled in 1831.
• The fifth HMS Severn (1856) was a 50-gun fourth rate launched in 1856, one of the last sail frigates. She was converted to screw propulsion in 1860 and was broken up in 1876.
• The sixth HMS Severn (1885) was a Mersey-class protected cruiser launched in 1885 and sold in 1905.
• The seventh HMS Severn (1914) was a Humber-class monitor, launched for Brazil in 1913 but purchased in 1914 and sold in 1921, being scrapped in 1923.
• The eighth HMS Severn (N57) was a Thames-class submarine launched in 1934 and scrapped in 1946.
• The ninth and latest HMS Severn (P282) is a River-class patrol vessel launched in 2002.

• Algiers 1816
• Belgian Coast 1914
• Konigsberg 1915
• Sicily 1943
• Aegean 1943
• Norway 1940
• Atlantic 1940–1941

• Colledge, J. J.; Warlow, Ben (2006) [1969]. Ships of the Royal Navy: The Complete Record of all Fighting Ships of the Royal Navy (Rev. ed.). London: Chatham Publishing. ISBN 978-1-86176-281-8.