Eight nuclear submarines have sunk as a consequence of either accident or extensive damage: two from the United States, four from the Soviet Navy, and two from the Russian Navy. All sank as a result of accident with the exception of K-27, which was scuttled in the Kara Sea when repair was deemed impossible and decommissioning too expensive. All of the Soviet/Russian submarines belonged to the Northern Fleet.

United States

• Thresher (SSN-593)
• Scorpion (SSN-589)

Union of Soviet Socialist Republics

• K-8
• K-219
• K-278 Komsomolets
• K-27

Russian Federation

• K-141 Kursk
• K-159