Four (stylized as all caps) is the fourth studio album by English-Irish boy band One Direction, released on 17 November 2014 by Columbia Records and Syco Music. The album was preceded by two singles, "Steal My Girl" and "Night Changes", both achieving platinum status in the US, and scoring the band their tenth and eleventh UK top-ten hits. The album was also One Direction's last with member Zayn Malik, who announced he was leaving the band on 25 March 2015.

The album received generally positive reviews from music critics. It debuted at number one in 18 countries, including the United Kingdom, Australia and the United States. With Four, One Direction became the first band to have their first four albums debut at number one in the United States. According to the International Federation of the Phonographic Industry (IFPI), Four was the sixth best-selling album of 2014, with 3.2 million copies sold worldwide.