List of submarine operators

The following countries operate or have operated submarines for naval or other military purposes.

Countries with currently operational submarines

 * Algeria
 * Australia
 * Azerbaijan
 * Bangladesh
 * Brazil
 * Canada
 * Chile
 * Colombia
 * Cuba - One indigenous design submarine was reported in service in 2020.
 * Ecuador
 * Egypt
 * France (list)
 * Germany (list)
 * Greece
 * India (list)
 * Indonesia
 * Iran
 * Italy (list)
 * Israel
 * Japan
 * Malaysia
 * Myanmar
 * Netherlands (list)
 * North Korea
 * Norway
 * Pakistan
 * People's Republic of China
 * Republic of China (Taiwan)
 * Peru
 * Poland
 * Portugal (list)
 * Russia (list) (some ex-Soviet Union)
 * Singapore
 * South Africa
 * South Korea
 * Spain (list)
 * Sweden (list)
 * Turkey (list)
 * United Kingdom (list)
 * United States (list)
 * Venezuela
 * Vietnam

Ballistic Missile Submarines (SSBN)
Ballistic missile submarines are larger than any other type of submarine, in order to accommodate ballistic missiles capable of carrying nuclear warheads.
 * China – Type 094 submarine, Type 092 submarine
 * France – Triomphant-class submarine
 * India – Arihant-class submarine
 * Russia – Delta-class submarine and Borei-class submarinees
 * United Kingdom – Vanguard-class submarine
 * United States – Ohio-class submarine

Countries previously operating submarines

 * Albania - all retired 1998
 * Argentina - Two submarines inactive (non-operational) in the Argentinian Navy.
 * Austria-Hungary (list)
 * Bulgaria - all retired by 2011
 * Cuba - Operated 3 Foxtrot-class submarines retired.
 * Denmark - retired after 2003
 * Estonia (Kalev and EML Lembit) - decommissioned 1955 in the Soviet Navy
 * Finland - last subs decommissioned after World War II
 * Latvia - all submarines taken over by Soviet Union in 1940.
 * Libya - all Foxtrot-class submarines retired (1 non-commissioned remains docked)
 * Romania (ROMANIAN SUBMARINE Delfinul, not operational; used for dockside training)
 * Serbia and Montenegro (ex-Socialist Federal Republic of Yugoslavia)
 * Soviet Union (list) (prior to 1991 collapse, many now operated by successor state Russia)
 * Syria - all Romeo-class submarines retired around 1992
 * Thailand (Matchanu-class submarine during the Franco-Thai War - built in Japan 1938 and retired 1951)
 * Ukraine (UKRAINIAN SUBMARINE Zaporizhzhia - lost to Russia in the 2014 Crimean crisis)