List of Portuguese colonial forts

This article will list all fortifications that were built, partially built, or ordered to be built by the Portuguese throughout the globe. All forts in this list are outside the modern territory of Portugal, and were built for the purpose of colonialism and the Portuguese Empire. Some of the forts were in Portuguese hands for a brief period - often a few years before the Portuguese were expelled, while others were held for centuries.

Portuguese explorers have discovered many lands and the sea routes in the 15th–18th centuries during the Age of Discovery. Along the way they built outposts and fortresses, many of which still exist today all over the world. These forts are often similar in design and are therefore easy to recognize.