Agneta Åse Fältskog, known as Agnetha Fältskog and Anna Fältskog, is a Swedish singer, songwriter and a member of the pop group ABBA. She first achieved success in Sweden with the release of her 1968 self-titled debut album. She rose to international stardom in the 1970s as a member of ABBA, which is one of the best-selling music acts in history. She is the youngest member of ABBA, and the only one born in the 1950s.

ABBA are a Swedish pop supergroup formed in Stockholm in 1972 by Agnetha Fältskog, Björn Ulvaeus, Benny Andersson, and Anni-Frid Lyngstad. The group's name is an acronym of the first letters of their first names arranged as a palindrome. They are one of the most popular and successful musical groups of all time, and are one of the best-selling music acts in the history of popular music.