Vic Fontaine is a fictional character who appeared in the sixth and seventh seasons of the American science fiction television series Star Trek: Deep Space Nine. Portrayed by James Darren, he is a holographic representation of a 1960s-era Las Vegas Rat Pack–style singer and entertainer, as part of a program run in the holosuites at Quark's bar. The character was developed from an idea by executive producer Ira Steven Behr, who had sought to introduce a character of that type during the fourth season to be played by Frank Sinatra, Jr. After Sinatra turned down the role, it was considered during the following season, to be played by Steve Lawrence, but once again was not used. Darren landed the role after Behr met him at a memorabilia show in North Hollywood and had him invited to audition.

Star Trek: Deep Space Nine (DS9) is an American science fiction television series created by Rick Berman and Michael Piller. The fourth series in the Star Trek media franchise, it originally aired in syndication from January 3, 1993, to June 2, 1999, spanning 176 episodes over seven seasons. Set in the 24th century, when Earth is part of a United Federation of Planets, its narrative is centered on the eponymous space station Deep Space Nine, located adjacent to a wormhole connecting Federation territory to the Gamma Quadrant on the far side of the Milky Way galaxy.