Tán Dì 曇諦 (Skt. Dharmasatya, fl. mid-3rd c.) was a Parthian (?) Vinaya specialist active at Luòyáng under the CáoWèi 曹魏 dynasty. His one extant work in the canon is the Jiémó 羯磨 (KR6k0014, T22n1433), a one-fascicle Dharmaguptaka karmavācanā compendium parallel to that of 康僧鎧. The two texts together represent the earliest practical Vinaya documents in Chinese. The biographical record is sparse (the Chū sānzàng jìjí T55n2145 mentions him only briefly); he is to be distinguished from the LiúSòng vinayācārya 曇諦 (a different person) who flourished a century later.