The USS Congo was a starship in service to Starfleet in the 23rd century.

In 2273, the Congo was being refitted at the main spacedock facilities located in Earth orbit. Willard Decker would often complain that the refit of the USS Enterprise was being held-up because the "dedicated" construction teams were working on the Congo and the USS Yorktown. (TOS short story: "Night Whispers")

This vessel may have meant to refer to the USS Kongo, a Constitution-class starship.