List of submarine operators

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

Countries with currently operational submarines

 * Algeria
 * Argentina
 * Australia
 * Brazil
 * Canada
 * Chile
 * Colombia
 * Ecuador
 * Egypt
 * France
 * Germany (list)
 * Greece
 * India (list)
 * Indonesia
 * Iran
 * Italy (list)
 * Israel
 * Japan
 * Malaysia
 * Netherlands (list)
 * North Korea
 * Norway
 * Pakistan
 * Peoples 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)
 * Ukraine
 * United Kingdom (list)
 * United States (list)
 * Venezuela
 * Vietnam on order

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
 * Russia – Typhoon-class submarine, Delta-class submarine, and Borei-class submarinees
 * United Kingdom – Vanguard-class submarine
 * United States –
 * India – Arihant-class submarine

Countries previously operating submarines

 * Albania - all retired 1998
 * Austria-Hungary (list)
 * Bulgaria - all retired by 2011
 * Cuba - all three Foxtrot class submarines retired
 * Denmark - retired after 2003
 * Estonia (Kalev and 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 (Delfinul submarine, under repair)
 * Serbia and Montenegro (ex-Socialist Federal Republic of Yugoslavia)
 * Soviet Union (list) (prior to 1991 collapse, many now operated by legal successor Russia)
 * Syria - all Romeo class submarines retired around 1992
 * Thailand (Matchanu class during the Franco-Thai War - built in Japan 1938 and retired 1951)