Woncheuk (Korean: 원측; MR: Wŏnch'ŭk, c. 613–696) was a Korean Buddhist monk who worked in seventh century China. Woncheuk was a follower of Paramārtha (499–569) and the Shelun school of Yogacara. This school defended the view that there was a ninth consciousness called the "pure consciousness" (amalavijñāna), as opposed to just the eight consciousnesses of classical Yogacara. This position had been rejected by Xuanzang and Kuiji. Woncheuk later became a student of Xuanzang (c. 600–664) and worked in his translation team. Woncheuk's works attempt to reconcile the two traditions of East Asian Yogacara and often diverges from the interpretations of Xuanzang and Kuiji in favor of the views of Paramārtha.
Woncheuk's work was revered throughout China and Korea, even reaching Chinese rulers like Emperors Taizong, Gaozong of Tang and Empress Wu of Zhou. Woncheuk's exegetical work also influenced Tibetan Buddhism and the greater Himalayan region.
