Thomas Gracin
- Full Name: Thomas A. Gracin
- Species: Human
- Gender: Male
- By August 2378: Lieutenant, security officer, Starfleet; USS Enterprise (TNG Novel: A Time to Love, A Time to Hate, A Time to Kill, A Time to Heal)
- Death: March 21, 2379; Tezwa (TNG Novel: A Time to Heal)
- Killed in attack on Ilanatava (TNG Novel: A Time to Heal)