The USS Lancet was a Federation starship, a Starfleet medical vessel in service in the late 23rd century.

In the year 2282, the Lancet was dispatched from Starbase 5 to rendezvous with the USS Enterprise following an outbreak of a virus that had struck down the Human crewmembers. Because of this, the Lancet was crewed by non-Humans, except Doctor Leonard McCoy, who pulled rank to get aboard the ship. (TOS - Enterprise Logs short story: "Just Another Little Training Cruise")