Yáo Jùn 姚俊 (fl. late Kāngxī to early Qiánlóng era, ca. 1680–1750), mid-Qīng literatus-physician of moderate clinical learning. Compiler of the Jīngyàn liángfāng quánjí 經驗良方全集 (KR3ed131) in 4 juǎn — a popular-clinical formulary covering internal medicine, external medicine, and smallpox-and-rash eruptions. According to his self-preface, Yáo entered medical practice under the influence of Chéng Yí’s dictum that “one who serves his parents cannot but know medicine” and the Táng-period precedent of Lù Zhì 陸贄’s medical-charity compilation. The work’s compilation was shaped by his rénxū-year refuge in Sìchuān during a regional epidemic — most plausibly 1682 (Kāngxī 21) or 1742 (Qiánlóng 7). Sparse further biographical record; not in CBDB.