Laibach (German pronunciation: [ˈlaɪbax]) is a Slovenian and Yugoslav avant-garde music group associated with the industrial, martial, and neo-classical genres. Formed in the mining town of Trbovlje in 1980, Laibach represents the musical wing of the Neue Slowenische Kunst (NSK) collective, a group which Laibach helped found in 1984.

From the early days, the band was subject to controversies and bans due to their use of iconography with parodies and pastiches of elements from totalitarianism, nationalism and militarism, a concept they have preserved throughout their career. Censored and banned in Socialist Yugoslavia and receiving a dissident status and a cult following in their home country, the band embarked on international tours and gradually acquired international fame, which led to wider acceptance in Yugoslavia. After Slovenia became independent in 1991, Laibach's status in the country has turned from rejection by a part of the public to promotion into a national cultural icon.

Early Laibach albums were pure industrial, with heavy rhythms and roaring vocals. Later in the mid-1980s, the sound became more richly layered, featuring samples from pop and classical music. The band's lyrics, variously written in Slovene, German and English, are usually delivered by the deep bass vocals of the singer Milan Fras. Initially the lyrics handled war and military themes; later, the focus turned to any highly charged political issue of the moment, sending intentionally ambiguous messages. They recorded several cover versions of popular songs, often turning light melodies into sinister-sounding gothic tunes.

The band has seen numerous line-up changes, with Dejan Knez, Milan Fras, Ervin Markošek and Ivan "Jani" Novak forming the best-known line-up. They have worked with a number of collaborators and guest musicians. During their career, Laibach have also recorded film and theatre music and produced works of visual arts, while the band members have embarked on a number of side projects.