The Bombing of Naco was an international incident which occurred in the border town of Naco, Arizona, during the 1929 Escobar Rebellion. While rebel forces were battling Mexican 'Federales' for control of the neighboring town of Naco, Sonora, the Irish-American mercenary and pilot Patrick Murphy was hired to bombard the government forces with improvised explosives dropped from his biplane. During the ensuing fighting, Murphy mistakenly dropped bombs on the American side of the international border on three occasions, causing significant damage to both private and government-owned property, as well as slight injuries to several American spectators watching the battle from across the border. The bombing, although unintentional, is noted for being the first aerial bombardment of the continental United States by a foreign power in history.

Naco is a census-designated place (CDP) located in Cochise County, Arizona, United States. Naco had a recorded population of 1,046 at the 2010 United States Census. Located directly across the United States–Mexico border from its sister city of Naco, Sonora, Naco is best known for an accidental 1929 air raid and is the first and only municipality in the Continental United States to have been aerially bombed by foreigners.