Back in Black is the seventh studio album by Australian rock band AC/DC, released on 25 July 1980, by Albert Productions and Atlantic Records. It was the band's first album to feature Brian Johnson as lead singer, following the death of their previous vocalist Bon Scott.

After the commercial breakthrough of their 1979 album Highway to Hell, AC/DC was planning to record a follow-up, but in February 1980, Scott died from alcohol poisoning after a drinking binge. The remaining members of the group considered disbanding, but ultimately chose to continue on and recruited Johnson, who had previously been the vocalist for Geordie.

The album was composed by Johnson and brothers Angus and Malcolm Young, and recorded over seven weeks in the Bahamas from April to May 1980 with producer Robert John "Mutt" Lange, who had also produced Highway to Hell. Following its completion, the group mixed Back in Black at Electric Lady Studios in New York City. The album's all-black cover was designed as a "sign of mourning" for Scott.

Back in Black was an unprecedented commercial and critical success. It has sold an estimated 50 million copies worldwide, making it one of the best-selling albums in music history. AC/DC supported the album with a yearlong world tour that cemented them among the most popular music acts of the early 1980s. It has since been included on numerous "greatest albums" lists. On 21 August 2024, the album was certified 27× Platinum by the Recording Industry Association of America (RIAA), making it the third best-selling album in the United States and the best-selling album that never reached the top spot on the American charts.