Tantōjutsu (短刀術) is a method of traditional Japanese dagger fighting. In feudal Japan, the tantō was used as a weapon of self-defence in times of peace and an armour piercing dagger in times of war. 

Tantōjutsu focuses both on offensive and defensive applications of the tantō, which can naturally translate to other short bladed weapons used in Europe, Asia and the Americas. 

Kamae of tantōjutsu concentrate on keeping the tantō hidden, so that it can be used in ambush or as a surprise. Due to the shortness of a tantō, it isn't an effective combat weapon and is best used in attacks of opportunity. 

Tantōjutsu waza focus on piercing and cutting the opponent. The tantō is a cutting weapon, so techniques are done by place the blade and pushing it. 

Jutsu of tantō revolve around keeping the blade hidden as long as possible. Whether in a fore or reverse grip, the blade is kept out of sight from the opponent until it is placed. Techniques of throwing the tantō to distract the opponent are also practiced.

Tantōjutsu kata often start from a rest position or a natural position. In the case of defence against tantō, the weapon is usually exposed to give the defender a chance to evade or disarm. Tantō is a very dangerous weapon and one of the hardest weapons to protect against.