The Army Mountain Warfare School (AMWS) is a United States Army school located at the Camp Ethan Allen Training Site, Jericho, Vermont to train soldiers in mountain warfare, the specialized skills required for operating in mountainous terrain. It is home to the 86th Infantry Brigade Combat Team. The school is located in Vermont's Green Mountains.

Mountain warfare or alpine warfare is warfare in mountains or similarly rough terrain. The term encompasses military operations affected by the terrain, hazards, and factors of combat and movement through rough terrain, as well as the strategies and tactics used by military forces in these situations and environments.