快乐小分队（英语：Joy Division）是一支英国摇滚乐队，于1976年在大曼彻斯特地区索尔福德组建。乐队原名为“Warsaw”，成员有主唱伊恩·柯蒂斯、吉他手兼键盘手伯纳德·萨姆纳、贝斯手彼得·霍克和鼓手史蒂芬·莫里斯。

萨姆纳和霍克在听了一场性手枪的演唱会后组建了快乐小分队。乐队根植于朋克摇滚，在此基础上发展出的风格使他们成为了后朋克运动的先驱之一。1978年，他们自己发行了处女作EP《An Ideal for Living》。该唱片吸引了曼彻斯特电视名人托尼·威尔森（Tony Wilson）的关注，他的独立厂牌工厂唱片（Factory Records）签约了快乐小分队。乐队的首张专辑《Unknown Pleasures》由马丁·汉内特（Martin Hannett）制作，在1979年发行，获得了乐评界赞誉。在此期间，柯蒂斯深受抑郁症和癫痫的困扰，还经历了婚姻失败等苦难。他在现场经常癫痫发作，出场演唱愈发不易。

Joy Division were an English rock band formed in 1976 in Salford, Greater Manchester. Originally named Warsaw, the band consisted of singer Ian Curtis, guitarist and keyboardist Bernard Sumner, bassist Peter Hook, and drummer Stephen Morris.

Formed by Sumner and Hook after the two attended a Sex Pistols gig, Joy Division moved beyond their punk roots to develop a sound and style that made them one of the pioneers of the post-punk movement. Their self-released 1978 debut EP, An Ideal for Living, drew the attention of the Manchester television personality Tony Wilson, who signed the group to his independent label, Factory Records. Joy Division's debut album, Unknown Pleasures, recorded with producer Martin Hannett, was released in 1979 to critical acclaim. As the band's popularity grew, Curtis, who suffered from personal problems that included severe depression, a failing marriage, and epilepsy, found it increasingly difficult to perform at live concerts, during which he occasionally collapsed into seizures.