Ken’i 兼意 (Chinese reading: Jiānyì, b. 1072 – d. after 1145), late-Heian / early-Kamakura Japanese Shingon Buddhist monk and pharmacological scholar. Affiliated with the Mōzan-ji 茂山寺 / Daigo-ji 醍醐寺 monastic complex, the principal centre of Heian-Kamakura esoteric Buddhist pharmacology and aromatics-compounding. Compiler of the three companion works Yakushushō 藥種抄 (KR3ec073) on medicinal substances, Kokuruishō 穀類抄 (KR3ec074) on grains, and Kōyōshō 香要抄 (KR3ec075) on aromatic substances. The aromatics work is the most famous and most widely transmitted; it is the principal medieval Japanese reference on incense and ritual fragrance materials, compiled in the Hōgen 保元 era (1156–1159). All three works draw on the Heian-court pharmacological tradition (the Honzō wamyō KR3ec072 of Fukae Sukehito 深江輔仁) plus the imported TángSòng pharmacological canon as filtered through Buddhist monastic compounding practice. Ken’i is mentioned in the Daigo-ji documentary record but no DILA authority record exists.