|Born:||26 August 2330|
|Assignment(s):||Chief medical officer|
|Stationed:|| USS Prospect|
|First appearance:||"The Tzenkethi Incident"|
- For alternate reality characters or other characters with the same name, see Justin O'Donovan (Live to Tell) and Justin O'Donovan (mirror).
In 2367, Justin O'Donovan assisted the Prospect crew in the rescue effort at Wolf 359. He was also present on the bridge when Kari Eriksson first reported for duty aboard the Prospect mid-2367. (Star Trek: The Prospect Chronicles: "The Burnt Child")
He also determined Eriksson's continual exposure to the Thrall would leave her with severe neurological damage or could even lead to death. O'Donovan accompanied an away team to help monitor Eriksson's condition and convince her she needed to come back to the Prospect.
Later that same year, he attended Hahn Jun-Seok's birthday party. O'Donovan also advised Captain John Greene on the bridge during the M'Tar holding the Prospect away team hostage aboard the USS Artemis. After the away team was recovered, Dr. O'Donovan tended Anne Lansing's serious internal injuries and operated on both Daniel Radke and Garrett to remove the M'Tar enhancements and physically rehabilitate them both. He also let Jason Athelstan stay by Radke's side in Sickbay during that time. (Star Trek: The Prospect Chronicles: "Lady Lazarus")