Abstract: A horse helmet for protecting the head of a horse from blunt force trauma experienced when the horse rears or jerks its head upwards and strikes overhanging framework. When horses are transported via trailers they sometimes rear or jerk their heads upwards and become injured or die when their heads strike the framework of the trailer. The horse helmet has a backing material made of felted fibers to provide comfort for the horse and an outer covering made of vinyl, leather or cloth to increase the durability of the helmet. Between the backing material and outer covering is a rubber pad which protects the horse from experiencing blunt force trauma during collisions with the trailer. Elastic straps with either snaps or hook and loop type fasteners allow the horse helmet to be easily and quickly attached to the rings of the horse's harness which allows the user to retain security of the horse.