九寸钉（简称NIИ ）是美国的工业金属乐队，由Trent Reznor在1988年成立于美国俄亥俄州克里夫兰市。作为它的主要制作人、歌手、作曲家和演奏家， Reznor是九寸钉唯一且保持全权负责乐团方向的正式成员。九寸钉的音乐横跨多种流派。通常在录制完一张新专辑后，Reznor会征招一组乐队与他进行现场表演。该乐队的阵容往往会随着现场的情境而重新编排歌曲。在舞台上，九寸钉经常采用如灯光秀等的视觉元素搭配表演。

在乐团成立的早期，九寸钉受到地下音乐听众热情地爱戴。Reznor在90年代所制作的几张极具影响力的作品使乐团的名声获得广泛地普及：许多九寸钉的歌曲成为广播热门歌曲、两张九寸钉的专辑赢得了格莱美奖，并且缔造了全球超过3千万张的唱片销量，其中有1千1百万张的专辑销量是在美国达成的。Trent Reznor在1997年成了时代杂志的年度最有影响力人物名单上的一员，且被Spin杂志形容为「音乐界重要的艺术家(the most vital artist in music)」。2004年，滚石杂志在其史上最伟大的100位音乐家名单上将九寸钉列为第94名。

Nine Inch Nails (abbreviated NIN; stylized as NIИ) is an American industrial rock band, founded in 1988 by Trent Reznor in Cleveland, Ohio. As its main producer, singer, songwriter, and instrumentalist, Reznor is the only official member of the group and remains solely responsible for its direction. Nine Inch Nails' music straddles a wide range of genres. After recording a new album, Reznor usually assembles a live band to perform with him. The touring band features a revolving lineup that often rearranges songs to fit a live setting. On stage, Nine Inch Nails often employs visual elements to accompany performances, which frequently include light shows.