A patient in the Tilonus IV asylum of Riker's delusion in 2369, who says she is a Starfleet officer and calls for rescue on a spoon.
Jaya appears in the episode Frame of Mind, played by Susanna Thompson.
In the common room of the asylum, Riker is approached by a woman who whispers that she too is from Starfleet. She gives a rank and a ship and says that she was captured on a mission, just as he believes he was. For a moment he thinks he has found proof that he is sane.
Then Jaya shows him how she keeps in touch with her ship. She lifts a spoon to her mouth and speaks into it as though it were a communicator. Riker's hope collapses, and he begins to accept the doctors' claim that the Enterprise is a fantasy. Like everything else in the asylum, Jaya is a creation of his own mind as it fights an alien probe.