30 is the fourth studio album by the English singer and songwriter Adele. It was released on 19 November 2021 by Columbia Records. Her first studio album in six years following 25 (2015), 30 was inspired by Adele's experiences and anxiety following her divorce and its impact on her son's life, along with motherhood and fame. Adele had begun working on the album in 2018 and collaborated with producers such as Greg Kurstin, Max Martin, Inflo, Tobias Jesso Jr., Ludwig Göransson, Shawn Everett, and Shellback. Musically, 30 is a pop, soul, and jazz album, which incorporates dance-pop, gospel, and R&B elements. The album was promoted with the television specials Adele One Night Only and An Audience with Adele. Three singles were released from the album. The lead single, "Easy on Me", reached number one in several countries, including the US and UK. The follow-up singles, "Oh My God" and "I Drink Wine", charted in the UK chart's top five simultaneously with it.

30 received acclaim from music critics, who emphasized Adele's vocal performance as well as the lyricism and subject matter. Media outlets included it in their lists of the best albums of 2021. The album was nominated for six Grammy Awards, including Album of the Year, and it won the Brit Award for British Album of the Year at the Brit Awards 2022, making Adele the first solo artist in history to win the award three times, having won previously for 21 and 25.

30 reached number one in twenty five countries. In the UK, it achieved the highest first-week sales for any album by a female artist since Adele's third studio album, 25 (2015). It spent five weeks at number one there and six in the US. 30 was the best-selling album of the year in both countries, as well as worldwide, with 5.54 million copies sold.