List of submarine classes in service

The list of submarine classes in service includes all submarine classes currently in service with navies or other armed forces worldwide. For surface combatants, see the list of naval ship classes in service.

Ballistic missile submarines

Arihant Class ballistic missile submarine (Project ATV)
- Builder: India
- Displacement: 6600 tons
- Operator: Indian Navy: 1 undergoing trials, 4 under development

Borei class ballistic missile submarine (Project 955 Borey)
- Builder: Russia
- Displacement: 23,800 tons
- Operator: Russian Navy: 2 in service, 1 undergoing trials, 1 ships building

Delta class ballistic missile submarine (Project 667BDR Kal'mar / 667BDRM Del'fin)
- Builder: Soviet Union / Russia
- Displacement: 18,730 tons
- Operator: Russian Navy: 9 in service, including 3 Delta III and 6 Delta IV

Jin class ballistic missile submarine (Project 094)
- Builder: People's Republic of China
- Displacement: 9,000 tons
- Operator: People's Liberation Army Navy: 2+ in service

Ohio-class ballistic missile submarine (SSBN 726)
- Builder: United States
- Displacement: 18,450 tons
- Operator: United States Navy: 14 in service with ballistic missiles

Triomphant class ballistic missile submarine
- Builder: France
- Displacement: 14,000 tons
- Operator: French Navy: 4 in service

Typhoon class ballistic missile submarine (Project 941 Akula)
- Builder: Soviet Union / Russia
- Displacement: 33,800 tons
- Operator: Russian Navy: 1 in active service of 6 built, 2 in reserve.

Vanguard class ballistic missile submarine
- Builder United Kingdom
- Displacement: 15,680 tons
- Operator: Royal Navy: 4 in service

Xia class ballistic missile submarine (Project 092)
- Builder: People's Republic of China
- Displacement: 7,000 tons
- Operator: People's Liberation Army Navy: 1 in service

Guided missile submarines

Oscar-class submarine (Project 949A Antey)
- Builder: Soviet Union / Russia
- Displacement: 19,400 tons
- Operator: Russian Navy: 8 in active service plus 2 in reserve

Ohio-class "Tactical Trident": Special Forces and Super Strike (SSGN 726)
- Builder: United States
- Displacement: 18,750 tons
- Operator: United States Navy: 4 in active service each with ~154 Tomahawks

Nuclear-powered attack submarines

Akula-class submarine (Project 971 Shchuka)
- Builder: Soviet Union / Russia
- Displacement: 10,700 tons
- Operator:
  - Russian Navy: 11 in service, including 3 Improved Akula and 2 Akula II
  - Indian Navy: 1 Akula II in active service

Astute-class submarine
- Builder: United Kingdom
- Displacement: 7,400 tons
- Operator: Royal Navy: 1 in service, 1 launched & 4 under construction out of a total of 7 (ordered) in class

Han class attack submarine (Type 091)
- Builder: People's Republic of China
- Displacement: 4,500 tons
- Operator: People's Liberation Army Navy: 3? in service

Los Angeles class attack submarine (SSN 688)
- Builder: United States
- Displacement: 7,000 tons
- Operator: United States Navy: 43 in commission

Rubis / Amethyste class attack submarine
- Builder: France
- Displacement: 2,670 tons
- Operator: French Navy: 6 in service

Seawolf class attack submarine (SSN 21)
- Builder: United States
- Displacement: 9,300 tons
- Operator: United States Navy: 2 in commission as attack subs with a third as a special mission support submarine

Yasen-class submarine (Project 885)
- Builder: Russia
- Displacement: 11,800 tons
- Operator: 2 Building

Shang class attack submarine (Type 093)
- Builder: People's Republic of China
- Displacement: 8,000 tons
- Operator: People's Liberation Army Navy: 2 in service

Sierra-class submarine (Project 945)
- Builder: Soviet Union
- Displacement: 10,400 tons
- Operator: Russian Navy: 3 in service, including one Sierra I and two Sierra II submarines

Trafalgar-class submarine
- Builder: United Kingdom
- Displacement: 5,208 tons
- Operator: Royal Navy: 6 in service out of 7 built

Victor-class submarine (Victor III Project 671)
- Builder: Soviet Union
- Displacement: 7,250 tons
- Operator: Russian Navy: 8 in service

Virginia-class submarine (SSN 774)
- Builder: United States
- Displacement: 7,800 tons
- Operator: United States Navy: 8 in service, 6 building, 30 planned.

Diesel-electric attack submarines

Agosta-class submarine
- Builder: France / Spain
- Displacement: 1,725 tons
- Operators:
  - Pakistan Navy: 5 in service
  - Spanish Navy: 4 in service

Challenger-class submarine (ex-Sjöormen class) submarine
- Builder: Sweden
- Displacement: 1,210 tons
- Operator: Republic of Singapore Navy: 4 in service

Collins-class submarine
- Builder: Australia
- Displacement: 3,050 tons
- Operator: Royal Australian Navy: 6 in commission

Dolphin-class submarine
- Builder: Germany
- Displacement: 1,900 tons
- Operator: Israeli Navy: 3 in service, 3 AIP building/ordered

Harushio-class submarine
- Builder: Japan
- Displacement: 2,750 tons
- Operator: Japan Maritime Self-Defense Force: 2 training submarines, 5 retired

Kilo-class submarine (Project 877 Paltus and Project 636)
- Builder: Soviet Union / Russia
- Displacement: 3,100 tons
- Operators:
  - Indian Navy: 9 Kilo, 1 exploded known as the Sindhughosh class
  - People's Liberation Army Navy: 2 Kilo and 10 Improved Kilo in service
  - Russian Navy: 17 in service plus a number of reserves, 6 Improved Kilo ordered
  - Algerian National Navy: 2 Original Kilo and 2 Improved Kilo
  - Polish Navy: 1 Kilo
  - Islamic Republic of Iran Navy: 3 Kilo
  - Romanian Naval Forces: 1 Kilo
  - Vietname People's Navy: 1 Kilo and 5 Improved Kilo ordered

Kobben-class (Type 207) submarine
- Builder: Germany
- Displacement: 485 tons
- Operators: Polish Navy: 4 in service, handed over from Norway

Ming-class (Type 035) submarine
- Builder: People's Republic of China
- Displacement: 2,100 tons
- Operator: People's Liberation Army Navy: 17

Oyashio-class submarine
- Builder: Japan
- Displacement: 4,000 tons
- Operator: Japan Maritime Self-Defense Force: 11 in service

Romeo-class submarine
- Builder: Soviet Union
- Displacement: 1,830 tons
- Operators:
  - Bulgarian Navy: 1 of many delivered remains in service, restricted capabilities

Sauro-class submarine
- Builder: Italy
- Displacement: 1,653 tons
- Operator: Marina Militare: 4 in service

Song-class submarine
- Builder: People's Republic of China
- Displacement: 2,250 tons
- Operator: People's Liberation Army Navy: 16 in service

TR-1700 class submarine
- Builder: Germany
- Displacement: 2116 tons
- Operators: Argentine Navy: 2 in service

Type 209 submarine
- Builder: Germany
- Displacement: 1,230/1,290/1,586 tons
- Operators:
  - Argentine Navy: 1 in service
  - Brazilian Navy: 5 in service
  - Chilean Navy: 2 in service
  - Colombian Navy: 2 in service
  - Ecuadorian Navy: 2 in service
  - Hellenic Navy: 7 in service
  - Indian Navy: 4 in service
  - Indonesian Navy: 2 in service
  - Peruvian Navy: 6 in service
  - South African Navy: 3 in service
  - Republic of Korea Navy: 9 in service
  - Turkish Navy: 14 in service
  - Bolivarian Armada of Venezuela: 2 in service

Ula-class (Type 210) submarine
- Builder: Germany
- Displacement: 1,150 tons
- Operator: Royal Norwegian Navy: 6 in service

Victoria-class hunter-killer submarine (SSK 876)
- Builder: United Kingdom
- Displacement: 2,400 tons
- Operator: Royal Canadian Navy: 4 in commission

Walrus-class submarine
- Builder: Netherlands
- Displacement: 2,800 tons
- Operator: Royal Netherlands Navy: 4 in service

Zwaardvis-class submarine
- Builder: Netherlands
- Displacement: 2,600 tons
- Operator: Republic of China Navy: 2 in service

Non-nuclear submarines with Air-independent propulsion

Gotland-class
- Builder: Sweden,
- Displacement: 1,647 tons
- Operators: Swedish Navy: 3 in service

Lada-class submarine (Project 677 Lada)
- Builder: Russia
- Displacement: 2,700 tons
- Operators: Russian Navy: 1 in service, 3 ordered

S-80 class submarine
- Builder: Spain
- Displacement: 2,426 tons
- Operator: Spanish Navy: 4 building

Scorpène class submarine
- Builder: France / Spain
- Displacement: 1,590 tons
- Operator:
  - Brazilian Navy: 4 ordered/building
  - Chilean Navy: 2 in service
  - Indian Navy: 6 ordered/building
  - Royal Malaysian Navy: 2 in service

Sōryū-class
- Builder: Japan
- Displacement: 4,200 tons
- Operators: Japan Maritime Self-Defense Force: 5 in service, 4 building or planned

Type 212 submarine
- Builders: Germany / Italy
- Displacement: 1,830 tons
- Operators:
  - German Navy: 4 in service, 2 ordered, 2 more planned
  - Marina Militare: 2 in service, 2 planned

Type 214 submarine
- Builder: Germany,
- Displacement: 1,980 tons
- Operators:
  - Hellenic Navy: 1 in service, 3 building
  - Republic of Korea Navy: 3 in service, 6 building/ordered
  - Portuguese Navy: 2 in service
  - Turkish Navy: 6 ordered

Västergötland class submarine / Archer class submarine
- Builder: Sweden
- Displacement: 1,145 tons
- Operator:
  - Swedish Navy: 2 in service
  - Republic of Singapore Navy: 2 on a delivery program

Yuan-class submarine
- Builder: People's Republic of China
- Displacement: ?
- Operator: People's Liberation Army Navy: 1 in service? plus 3 building

Special mission submarines

Mystic class deep sea rescue submersible (DSRV 1)
- Builder: United States
- Displacement: 37 tons
- Operator: United States Navy: 1 in service

Paltus class special mission submarine (Project 1083.1)
- Builder: Russia
- Displacement: 730 tons
- Operator: Russian Navy

Uniform class special mission submarine (Project 1910 Kashalot)
- Builder: Soviet Union / Russia
- Displacement: 1,580 tons
- Operator: Russian Navy

Velebit midget submarine
- Displacement: 99 tons
- Operator: Croatian Navy

Yankee Pod trials submarine (Project 09774)
- Builder: Soviet Union
- Displacement: 10,100 tons
- Operator: Russian Navy: 1 in service

Yankee Stretch special mission support submarine (Project 09780)
- Builder: Soviet Union
- Displacement: 11,600 tons
- Operator: Russian Navy: 1 in service