AM is the fifth studio album by English rock band Arctic Monkeys. It was produced by longtime collaborator James Ford and co-produced by Ross Orton at Sage & Sound Recording in Los Angeles and Rancho De La Luna in Joshua Tree, California, and released on 9 September 2013 through Domino Recording Company. The album was promoted by the singles "R U Mine?", "Do I Wanna Know?", "Why'd You Only Call Me When You're High?", "One for the Road", "Arabella", and "Snap Out of It". It features guest appearances by Josh Homme, Bill Ryder-Jones, and Pete Thomas.

Drawing inspiration from a wide range of genres, including psychedelic rock, blues rock, hard rock, heavy metal, desert rock, R&B, funk and soul, AM notably marks Arctic Monkeys' first venture into a hip hop-influenced sound. The band took a different approach to recording the album in comparison to their previous album, Suck It and See (2011), with more emphasis on creating a "studio album" according to frontman Alex Turner. The band incorporated new instruments on the album, including the piano, organ, Hohner Guitaret, and vintage drum machine. Thematically, the album concerns frustration surrounding tainted romance, sex and loneliness.

Commercially, the album has become one of Arctic Monkeys' most successful to date, topping charts in several countries, and reaching top ten positions in many more. Topping the UK Albums Chart, it sold over 157,000 copies in its first week and also went on to be one of the UK's best-selling vinyl albums of the decade, selling 73,000 units. In addition, the album became the band's most successful in the United States. The single "Do I Wanna Know?" became the first song by the band to enter the Billboard Hot 100, with the album topping four Billboard charts and being certified four-times platinum in the US by the Recording Industry Association of America (RIAA) in 2023.

AM received critical acclaim, with critics praising its darker and groovier sound in comparison to the band's previous records. It won the Brit Award for British Album of the Year, and was nominated for the Grammy Award for Best Rock Performance ("Do I Wanna Know?") and the Mercury Prize. Several media publications have ranked AM among the best albums of 2013, of the 2000s, and of all time. NME called it the best album of the decade, and included it on its "500 Greatest Albums of All Time" list. Rolling Stone included it on the 2020 edition of its "500 Greatest Albums of All Time" list.