"Flashback" is the 44th episode of the American science fiction television series Star Trek: Voyager airing on the UPN network. It is the second episode of the third season.

The series follows the adventures of the Federation starship Voyager during its journey home to Earth, having been stranded tens of thousands of light-years away. In this episode, Captain Janeway must help Lt. Tuvok delve into his past to understand a memory triggered by the sight of a spatial phenomenon.

This episode was produced, along with Star Trek: Deep Space Nine's "Trials and Tribble-ations" as part of the Star Trek franchise's 30th anniversary. It is noteworthy for featuring characters of the Original Series and related feature films, most noticeably Hikaru Sulu (George Takei) and Janice Rand (Grace Lee Whitney). Both characters appear by means of a flashback by Tuvok, relating to some of the events previously depicted in the film Star Trek VI: The Undiscovered Country.

The episode was premiered at the fan-run not-for-profit UK convention "Delta Quadrant" held at the Britannia Hotel in Birmingham City Centre in August 1996. The episode was first shown during the evening of 9 August 1996 from a VHS video cassette in the care of the convention's organiser Bob Hollocks.

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