Kenjutsu (剣術; Literally meaning "Sword Technique") pertains to techniques that entail the use of swords, whether the users be shinobi or samurai. Kenjutsu can be used in combination with taijutsu, ninjutsu and/or chakra flow in order to achieve more devastating techniques. As shown by one anime-only instance, even kenjutsu based genjutsu can be used.
The entire military might of the lone samurai nation of the Land of Iron, have so-far all been depicted as practitioners of kenjutsu. Among the shinobi nations, the Seven Ninja Swordsmen of the Mist are particularly well known as kenjutsu practitioners. Also, a majority of Kumogakure shinobi are swordsmen.