Qayamat Se Qayamat Tak (transl. From apocalypse to apocalypse; QSQT), also known by the initialism QSQT, is a 1988 Indian Hindi-language romantic musical film, directed by Mansoor Khan in his directorial debut, and written and produced by Nasir Hussain. The film stars Aamir Khan and Juhi Chawla in lead roles. The film features music by Anand–Milind, with lyrics written by Majrooh Sultanpuri. Qayamat Se Qayamat Tak tells the story of two individuals and recounts their journey of falling in love, eloping, and the aftermath.

The film was released on 29 April 1988. Made on a budget of ₹25 million, the film emerged as a commercial success, with a worldwide gross of ₹50 million, became the third highest-grossing film of the year. The film received positive remarks from critics. The soundtrack of the film was equally successful, becoming one of the best-selling Hindi soundtrack albums of the 1980s with more than 8 million soundtrack albums sold, thus being a breakthrough for the careers of Anand–Milind, as well as T-Series, one of India's leading record labels. The film's music also established the careers of the Udit Narayan and Alka Yagnik.

At the 36th National Film Awards, Qayamat Se Qayamat Tak won the Best Popular Film Providing Wholesome Entertainment. At the 34th Filmfare Awards, the film received eleven nominations, and won a leading eight awards, including Best Film, Best Director. Khan and Chawla performance in the film earned them Best Male Debut and Best Female Debut respectively. The film is widely considered to be a milestone for its genre, earning praise from critics for its direction, the story and music. The plot of the film was a modern-day take on classic tragic romance which "reinvented the romantic musical genre", setting the template for Hindi musical romance films that defined Hindi cinema in the 1990s. Indiatimes Movies ranks the film amongst the "Top 25 Must See Bollywood Films".