Antonia was a woman with whom James T. Kirk had a love affair while he was living on Earth in the 2280s. Kirk met Antonia in 2282 at his uncle's farm in Idaho. Antonia stayed at Kirk's mountain retreat in 2284 the day he decided to return to Starfleet.
Kirk found a recreation of Antonia and his mountain retreat in the reality that he experienced after he was pulled from the USS Enterprise-B into the Nexus in 2293. (Star Trek Generations)
- Antonia was played by the uncredited actress Lynn Salvatori.