Abstract: A helmet restraint and head and neck stabilizing system for use with a helmet worn by an operator or occupant of a land vehicle, boat, airplane or other motion apparatus, in conjunction with a shoulder belt system or a suit worn by the operator or occupant. The helmet restraint and head and neck stabilizing system preferably includes two end connecters, two releasable buckles, two flexible end belts, and a flexible middle belt. The two end connecters are separately attachable to the shoulder belt system or the suit worn by the operator or occupant on opposite sides of the helmet worn by the operator or occupant. The two end belts each have one end affixed to one end connecter and an opposite end connected to one buckle, respectively. The middle belt has one end connected to one buckle and an opposite end connected to the other buckle. The length of the first or second end belt or the middle belt is adjustable.