Akka is traditionally a female spirit in Sámi and Finnish mythology.
In Sámi mythology, the first akka was Maderakka and her daughters were Sarakka, Uksakka and Juksakka. Some Sámi thought they lived under their kota tents.
In Finnish mythology, Akka is the wife of Ukko ylijumala, and she is the goddess of fertility. As they make love, thunder rolls. She could be seen as the female side of nature, maaemonen, the "mother earth" whom Ukko ferilizes.
Worship of akka was common, and took the form of sacrifices, pleas for help and various rituals. Sarakka was thought to be especially helpful for pregnant women, and after a birth, a woman would eat a special porridge dedicated to her.