Siouxsie and the Banshees (, SU-zi-and-the-BAN-shees) were a British rock band formed in London in 1976 by vocalist Siouxsie Sioux and bass guitarist Steven Severin. They have been widely influential, both over their contemporaries and with later acts. The Times called the group "one of the most audacious and uncompromising musical adventurers of the post-punk era".

Initially associated with the punk scene, the band including guitarist John McKay and drummer Kenny Morris rapidly evolved to create "a form of post-punk discord full of daring rhythmic and sonic experimentation". Their debut album The Scream was released to widespread critical acclaim in 1978. Following membership changes, including the addition of guitarist John McGeoch and drummer Budgie, they radically changed their musical direction and became one of the most successful alternative pop groups of the 1980s. Their third album Kaleidoscope (1980) peaked at number 5 on the UK Albums Chart. With Juju (1981) which also reached the top 10, they became an influence on the emerging gothic scene.

In 1988, the band made a breakthrough in North America with the multifaceted album Peepshow, which received critical praise. With substantial support from alternative rock radio stations, they achieved a mainstream hit in the US in 1991 with the single "Kiss Them for Me".

During their career, Siouxsie and the Banshees released 11 studio albums and 30 singles. The band experienced several line-up changes, with Siouxsie and Severin being the only constant members. They disbanded in 1996, with Siouxsie and Budgie continuing to record music as the Creatures, a second band they had formed in the early 1980s. In 2004, Siouxsie began a solo career.