"Time's Orphan" is the 148th episode of the syndicated American science fiction television series Star Trek: Deep Space Nine, the 24th episode of the sixth season.

Set in the 24th century, the series follows the adventures on Deep Space Nine, a space station located near a stable wormhole between the Alpha and Gamma quadrants of the Milky Way Galaxy. In this episode, young Molly O'Brien (Hana Hatae) falls into an alien time portal and is rescued ten years older as a feral 18-year-old.

The O'Brien family, reunited after Deep Space Nine has been reclaimed, takes a family trip to the planet Golana IV. While playing, eight-year-old Molly (Hana Hatae) falls into an abandoned time portal despite Miles's (Colm Meaney) efforts to save her; the portal closes after Molly passes through. The station's staff quickly comes to the O'Briens' help to try to recover Molly, using transporter technology to lock onto her signal once they are able to open the portal again. However, they find the portal has opened at a different time, and the Molly they rescue is now 18 years old and feral after having to survive on her own for the last ten years in the planet's past. Molly is brought back to the station, and placed in a special habitat made to resemble the planet, to allow the O'Briens to try to reconnect with their daughter. During this time, Jadzia Dax (Terry Farrell) offers to look after infant Yoshi O'Brien, but when this interrupts her planned scientific ventures, Worf (Michael Dorn) offers to watch the child.

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