"Men in Black" is a song by Will Smith (featuring singer Coko from group SWV) from the movie Men in Black, in which he also starred. The song is Smith's first solo single, following his work with DJ Jazzy Jeff. The song plays during the movie's closing credits. Smith raps about how the Men in Black "Walk in shadow, move in silence" and play the role of "first, last and only line of defense, against the worst scum of the universe", while Coko adds her soulful soprano and alto vocals in the background. The song won Smith a Grammy Award in 1998 for Best Rap Solo Performance.

"Men in Black" features a sample of, and a re-sung chorus from, "Forget Me Nots" by Patrice Rushen. In a twist, the line "I want you to remember" is changed to "They won't let you remember", in reference to the memory-erasing "neuralyzer" devices used in the Men in Black movie.

Aside from appearing on the movie's soundtrack, the song also appears on Smith's Columbia Records album Big Willie Style and reached number one on charts in Australia, France, Germany and the United Kingdom. The song did not chart on the Billboard Hot 100 because it was not released as a commercial single in the US; at the time, only songs that were commercially released as singles were eligible, but it did top the airplay chart. The music video for the song also appears on the DVD The Will Smith Collection. It was also included in the album All Time Greatest Movie Songs, released by Sony in 1999. It was also featured after the end credits of the VHS release of "Men in Black". It was also covered by Forever the Sickest Kids for the compilation album Punk Goes Crunk & by Alvin and the Chipmunks for the album The A-Files: Alien Songs. An instrumental and short version of the song plays over the closing credits in Men in Black: The Series.

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