Kabuto is a type of helmet first used by ancient Japanese warriors that, in later periods, became an important part of the traditional Japanese armour worn by the samurai class and their retainers in feudal Japan.

A helmet is a form of protective gear worn to protect the head. More specifically, a helmet complements the skull in protecting the human brain. Ceremonial or symbolic helmets without protective function are sometimes worn. Soldiers wear combat helmets, often made from Kevlar or other lightweight synthetic fibers.