ABBA is the third studio album by Swedish group ABBA and originally came out in 1975 on Polar Music. It is the first album released under the name ABBA, following earlier releases by the members under different names. The album includes the singles "Mamma Mia" and "S.O.S.", both of which topped the Swedish charts and were also successful internationally. This album marked ABBA's definitive breakthrough outside Scandinavia.