The territory is made up of three main volcanic tropical islands along with a number of tiny islets, and is split into two island groups that lie about  apart, namely Wallis Islands (or Uvea Islands) in the northeast and Hoorn Islands (or Futuna Islands) in the southwest, including Futuna Island proper and the mostly uninhabited Alofi Island.
The territory comprises three primary volcanic tropical islands, along with numerous small islets, and is divided into two island clusters situated approximately apart, namely Wallis Islands (or Uvea Islands) in the northeast and Hoorn Islands (or Futuna Islands) in the southwest, including Futuna Island proper and the largely uninhabited Alofi Island.