Kagawa Shukugen 香川景與 (Kagawa Shūan 香川修庵 / 修菴, 1745–1803), Edo-period Japanese koihō 古醫方 physician and grandson of the school-founder Kagawa Shūtoku 香川修徳. Authority cited by 岡田昌春 Okada Masaharu in KR3eh054 for dating the resurgence of Japanese kakke to the Hōreki era (1751–1764).