In Disney's Frozen, the kingdom ruled by Elsa and Anna is Arendelle.
Arendelle is the fictional Scandinavian-inspired realm where most of the film's story takes place. Elsa becomes its queen after the death of her parents, while Anna is her younger sister and princess. The kingdom's name is revealed through the characters' dialogue, songs, and the opening setting.
Frozen begins with Arendelle celebrating Elsa's coronation. Soon afterward, Elsa's uncontrolled ice powers expose her secret and plunge the kingdom into an unnatural winter. Anna leaves Arendelle to find Elsa, eventually helping repair their relationship and restore summer.
Arendelle is sometimes confused with other Disney locations, such as Corona from Tangled or Atlantica from The Little Mermaid. It is also distinct from the real-world Scandinavian countries that influenced Frozen's architecture, clothing, landscapes, and visual style.