Buddhist logico-epistemology is a term used in Western scholarship to describe Buddhist systems of pramāṇa (epistemic tool, valid cognition) and hetu-vidya (reasoning, logic).
While the term may refer to various Buddhist systems and views on reasoning and epistemology, it is most often used to refer to the work of the "Epistemological school" (Sanskrit: Pramāṇa-vāda), i.e., the school of Dignaga and Dharmakirti which developed from the 5th through 7th centuries and remained the main system of Buddhist reasoning until the decline of Buddhism in India.