USS Artemis was a Federation Starfleet ship, of unrevealed class, active in the mid-23rd century. (TOS novel: Vulcan's Glory)
After Spock's service on the USS Southampton, Lieutenant Andreas Lysacek, the executive officer, recommended him to Captain Daniels of the Artemis. ("The Crash")
The chief science officer of the Artemis was an Andorian named Thrella. During his service on Artemis, Spock moved up from a junior science officer billet to third-in-command and then first officer. (Cloak and Dagger)
- An Archer-class USS Artemis was commissioned in the mid-2260s, so presumably Captain Daniels's Artemis would have been lost, destroyed or decommissioned by then.