Dignāga (陈那菩萨) was an Indian Buddhist scholar and philosopher of the 5th-6th century CE, widely credited with founding the school of Buddhist logic (Pramāṇavāda) and authoring influential works such as the *Pramāṇasamuccaya* (Compendium of Proofs). His systematic approach to epistemology and logic profoundly impacted subsequent Mahayana Buddhist thought and scholarship in East Asia.