Shinto-ryu can refer to several styles of classical Japanese swordsmanship used by the samurai:
Tenshin Shōden Katori Shintō-ryū Kashima Shintō-ryū Kasumi Shintō-ryū Kenjutsu Hyōhō Niten Ichi-ryū
or to some other martial art: Shintō Musō-ryū, a school of jōjutsu Shindo Ryu, a modern style of karate Shinto Ryu, a modern style of Taijutsu
See also Koryū