Porto Santo Island is a Portuguese island 43 kilometres (27 mi) northeast of Madeira Island in the North Atlantic Ocean; it is the northernmost and easternmost island of the archipelago of Madeira, located in the Atlantic Ocean west of Europe and Africa.

Madeira, officially the Autonomous Region of Madeira, is one of two autonomous regions of Portugal, the other being the Azores. It is an archipelago situated in the North Atlantic Ocean, in a region known as Macaronesia, just under 400 kilometres (250 mi) to the north of the Canary Islands and 520 kilometres (320 mi) west of the Kingdom of Morocco. Madeira is geologically located on the African Tectonic Plate, although it is culturally, politically and ethnically associated with Europe, with its population predominantly descended from original Portuguese settlers. Its population was 251,060 in 2021. The capital of Madeira is Funchal, which is located on the main island's south coast.