The USS Enterprise (NCC-1701-G), formerly the USS Titan (NCC-80102-A), was a Federation Constitution III-class starship operated by Starfleet in the 24th and 25th centuries.

Launched in 2396 under the command of Captain Liam Shaw, the USS Titan-A was originally the fourth Starfleet vessel to bear the name Titan and the second to bear the NCC-80102 registry. In 2401, the Titan-A was instrumental in stopping the Changeling/Borg threat to Starfleet and the Federation.

In 2402, she was rechristened as the Enterprise-G under the command of Captain Seven of Nine, the eighth Federation starship to bear the name Enterprise, in honor of the command crew of the USS Enterprise-D and the crucial part the ship had played in assisting their efforts to counter the Borg.