Kayano Ju 賀谷壽 (sinicized Hègǔ Shòu, fl. late Edo period) was a Japanese physician of the Ko-iho 古醫方 (“ancient-formulas”) school descended from Yoshimasu Tōdō 吉益東洞 (1702–1773). His extant work is the Qízhèng fāng 奇正方 (KR3ed095), preserved in the Kanripo corpus only as the body of recipes (no preface in the visible portion). The qízhèng nomenclature — “irregular and regular” formulas, after the military-classics distinction of qí (extraordinary) and zhèng (orthodox) tactics — is characteristic of Edo Ko-iho school works, which contrasted zhèngfāng (Zhòngjǐng’s correct formulas) with qífāng (extraordinary cases requiring adapted prescribing). Sparse biographical information.