Naginatajutsu (なぎなた術, 長刀術 or 薙刀術) is the Japanese Martial art of wielding the naginata, a weapon resembling the medieval European glaive. Most naginata practice today is in a modernized form, a gendai budo called naginata-do or atarashii naginata (new naginata), in which competitions also are held.

Many koryū ryūha, such as the Tenshin Shoden Katori Shinto-ryu, include naginatajutsu in their curriculum.