Koretoshi Maruyama
Japanese martial arts instructor
丸山惟敏
Koretoshi Maruyama (born 5 October 1936) is a Japanese aikido instructor and founder of Aikido Yuishinkai (合氣道唯心会), he was an uchideshi of aikido founder Morihei Ueshiba and also a student of Koichi Tohei.
External links
Facts from Wikidata Q1784384 (CC0); quoted introduction from English Wikipedia (CC BY-SA 4.0). Data retrieved 2026-10-22.
Data: Wikidata (CC0 1.0); Wikipedia (English) (CC BY-SA 4.0). Retrieved 2026-10-22.
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