Submarine Group 2 was a command of the United States Navy from 1965 to 2014. It was headquartered at the Naval Submarine Base New London in Groton, Connecticut and was a subordinate command of Commander, Naval Submarine Force Atlantic (SUBLANT). Prior to the mid-1970s, it was designated Submarine Flotilla Two.
Subordinate units of Submarine Group 2 included -
Submarine Group 2 was disestablished on August 22, 2014.