"Visionary" is the 63rd episode of the television series Star Trek: Deep Space Nine, the seventeenth episode of the third season.

Set in the 24th century, the series follows the adventures on Deep Space Nine, a Starfleet-run space station adjacent to a wormhole leading to the distant Gamma Quadrant of the galaxy; the Gamma Quadrant is home to a powerful empire known as the Dominion. In this episode, Deep Space Nine's operations chief Miles O'Brien begins having visions of the future after an accident, while a delegation from the Romulan Empire visits the station.

When "Visionary" was broadcast in 1995, it achieved ratings of 7.9 and third spot in its time slot. This was in line with much of the ratings for season 3 which varied between about 6 and 9 Nielsen points over the course of its run (from October 1994 to July 1995). This was a popular time for the franchise, with Star Trek Generations hitting theaters in November 1994 and Star Trek: Voyager coming out in January 1995.