Lunachicks are an American punk rock band from New York City. The band formed in 1987, went on hiatus in 2001, and reunited in 2019. The band cited influences including the Ramones, Kiss, and the MC5.

Theo Kogan, Gina Volpe, and Sydney "Squid" Silver were students at New York City's Fiorello H. LaGuardia High School of Music & Art and Performing Arts when they decided to form a band. Sindi Benezra, an acquaintance of Silver, was asked to join shortly after. They rehearsed and wrote material in Gina's bedroom for about a year. Their first composition, the lengthy "Theme Song", was about killing Kogan's and Silver's English teacher. The band played their first show in 1988 with Theo's then-boyfriend Mike on the drums.

Kim Gordon and Thurston Moore of Sonic Youth were amongst the audience for one of their early performances. Gordon and Moore were impressed with the band and sent a demo tape to Paul Smith in England, which landed them a deal on Smith's label Blast First. With drummer Becky Wreck (Susan Rebecca Lloyd) on board they released a self-titled four-song EP in 1989, and the album Babysitters on Acid, both produced by Wharton Tiers. The record was only available in Europe until it was re-released on Go-Kart Records in 2001. The band later expressed their strong dislike for the album's production, and the fact that they did not earn any money from Blast First. The band went on to tour with the Dictators in 1991.

1992 saw the release of their second album, Binge & Purge. Around this time drummer Becky Wreck gained cult popularity for a TV appearance on Howard Stern's Lesbian Dating Game. She left the band some time later and was briefly replaced by Beastie Boys and Luscious Jackson drummer Kate Schellenbach, before Chip English joined. During their first visit to Japan, a six-song EP entitled Sushi A La Mode, featuring a cover of Boston's "More Than a Feeling", was recorded and released in Japan in the fall of 1993.

Lunachicks were signed to New York-based label Go Kart Records, on which they released 1995's Jerk of All Trades. The follow-up, 1997's Pretty Ugly, produced by Ryan Greene and Fat Mike of NOFX, features their most well-known song "Don't Want You", which was promoted with a video. Guitarist Sindi then left the band, after which the band stayed a four-piece. They released their first live album Drop Dead Live in 1998, and then their final album to date, Luxury Problem. By this time, the group had a busy touring schedule, headlining clubs in the United States, Europe, the U.K., and Japan, while opening for the likes of the Ramones, the Buzzcocks, No Doubt, the Go-Go's, Rancid, and NOFX, as well as appearing on the Vans Warped Tour.

Lunachicks joined the Warped Tour in 1999, one of only three female acts along with the Donnas and Bif Naked, and again in 2000. Chip English left the band in the fall of 1999 and was replaced by then 18-year-old Helen Destroy (now known as Gus Morgan), who stayed with the band until it went on hiatus in the summer of 2001. The band never officially disbanded, but had been inactive since then, with the exception of two reunion shows in 2002 and 2004.

Whilst being the front runner for the Lunachicks, Theo Kogan also worked on the side as a model, per request by her friends in the fashion industry. She modeled for Calvin Klein, which ended up being a controversial campaign said to promote "drug use", and Burberry. In an interview with Jon Stewart, Kogan noted that music would always come before modeling and that modeling would always be a side job.

In 2021, the band played two shows at Punk Rock Bowling in Las Vegas. They were the band’s first live performances in 17 years.