"Closer" is a song by American industrial rock band Nine Inch Nails, released as the second single on their second studio album, The Downward Spiral (1994). Released in May 1994, it is considered one of Nine Inch Nails' signature songs and remains their most popular song. Most versions of the single are titled "Closer to God", a rare example in music of a single's title differing from the title of its A-side. The single is the ninth official Nine Inch Nails release, making it "Halo 9" in the band's official Halo numbering system.

American industrial rock band Nine Inch Nails have released 11 studio albums, one live album, three remix albums, two compilation albums, six extended plays, 20 singles, 10 promotional singles, four video albums and 31 music videos. Nine Inch Nails has also contributed to numerous film soundtracks as well as the soundtrack to the video game Quake.