普林西比岛是圣多美和普林西比的两个主要岛屿之一。总面积136 km²，人口约5,000，人口密度约36人/km²。岛上设普林西比省，辖一个县，即帕盖县。主要城镇为圣安东尼奥，省政府和县政府都位于此。岛上有一个机场，即普林西比机场。该岛为火山岛。

圣多美和普林西比行政区划 圣多美省 阿瓜格兰德 坎塔加洛 考埃 伦巴 洛巴塔 梅索西 普林西比省 帕盖

Príncipe is the smaller, northern major island of the country of São Tomé and Príncipe lying off the west coast of Africa. It has an area of 136 square kilometres (53 sq mi) and a population of approximately 5,000. The island is a heavily eroded volcano speculated to be over three million years old, surrounded by smaller islands including Ilheu Bom Bom, Ilhéu Caroço, Tinhosa Grande and Tinhosa Pequena. Part of the Cameroon Line archipelago, Príncipe rises in the south to 948 metres at Pico de Príncipe, in a thickly forested area forming part of the Obo National Park.