Tanba no Masatada 丹波雅忠 (Heian Japanese reading; sinicized Dānbō Yǎzhōng, 1021–1088), great-grandson of the Ishinpō compiler 丹波康賴 (Tanba no Yasuyori, 912–995) and one of the most prominent court physicians of the late Heian period. He served as Naikyō-no-suke 内薬正 (head of the Bureau of Internal Medicines) and Chikara-no-kami 主稅頭 (head of the Bureau of Taxes — the latter being one of those late-Heian courtly appointments held alongside medical office in the great hereditary medical families). His principal surviving medical work is the Iryaku-shō 醫略抄 (KR3ed101) — a concise topical clinical formulary in 50 sections (242 formulae drawn from 34 JìnTáng Chinese classical formularies) preserved in manuscript within the Tanba family archive until printed by his Edo-period descendant 丹波元簡 in the early 1800s.
The Tanba family hereditarily held the court medical office through the entire Heian, Kamakura, Muromachi, and Edo periods, ultimately producing the bakufu-era Igaku-kan philological school. Masatada is one of the principal Heian intermediaries in the transmission.