Madeira (/ m ə ˈ d ɪər ə / mə-DEER-ə or / m ə ˈ d ɛər ə / mə-DAIR-ə; [3] [4] [5] European Portuguese: [mɐˈðɐjɾɐ] ⓘ), officially the Autonomous Region of Madeira (Portuguese: Região Autónoma da Madeira), is an autonomous region of Portugal.It is an archipelago situated in the North Atlantic Ocean, in the region of Macaronesia, just under 400 kilometres (250 mi) north of ...