Wú Dànyuán 吳澹園 (fl. late 19th c., 清), late-Qīng physician and in-law of 沈文彬. Compiled the Yàonéng 藥能 — a now-rare pharmacological manual that Shěn merged with 高鼓峰’s Yàolùn notes to produce the late-Qīng Yàolùn of 1901 (KR3ec062). No further biographical detail securely attested; no CBDB record.