Armored trains are trains that have been equipped with armor plating, weapons, and other defensive and offensive equipment in order to protect them from enemy attacks during times of war or civil unrest. These trains were first used in the mid-19th century during the American Civil War, but they became especially popular during World War I and World War II.

The use of armored trains allowed military forces to quickly transport troops, weapons, and supplies across long distances, while also providing a mobile base for soldiers to launch attacks from. The armor plating on the trains protected them from small arms fire, shrapnel, and other types of weapons, while machine guns, artillery, and other weapons mounted on the trains allowed them to engage enemy forces.