Kōnen 興然 (1121–1203) was a late-Heian to early-Kamakura Japanese Buddhist scholar of mixed Tendai-and-Shingon training. He is principally remembered for his KR6t0152 Qiānfúlún xiāng xiǎnmì jí 千輻輪相顯密集 (“Compendium on the Thousand-Spoked-Wheel Mark in Apparent and Esoteric Modes”) — a one-fascicle iconographic-doctrinal treatise on the thousand-spoked-wheel mark (one of the thirty-two major marks of a cakravartin / Buddha) as understood across apparent and esoteric Buddhist traditions.
The work takes the Mahāparinirvāṇa-sūtra (大般涅槃經) account of Kāśyapa requesting the Buddha to show the thousand-spoked-wheel marks on his hands, feet, head, breast, navel, etc. as its scriptural foundation, and develops the comparative apparent-and-esoteric doctrinal articulation of the bāo-zhì-shàn-xiàng 寶之相 (“treasured marks”) iconography.
He is sparsely documented in the standard biographical sources beyond this attestation.