List of World War II weapons of the United States

The following is a list of World War II weapons of the United States, which includes firearm, artillery, vehicles, vessels, and other support equipment known to have been used by the United States Armed Forces—namely the United States Army, United States Army Air Forces, United States Marine Corps, United States Navy, and United States Coast Guard—as well as the Office of Strategic Services and other U.S. government agencies involved in the war, during American involvement between 1941 and 1945.

This list includes experimental technology that, while created during the war, was never issued as intended.

A common practice was to strap two 15-round magazine ammo pouches to the gun stock.