David J. Kalupahana (1936–2014) was a Buddhist scholar from Sri Lanka. He was a student of the late K.N. Jayatilleke, who was a student of Wittgenstein. He wrote mainly about epistemology, theory of language, and compared later Buddhist philosophical texts against the earliest texts and tried to present interpretations that were both historically contextualised and also compatible with the earliest texts, and in doing so, he encouraged Theravada Buddhists and scholars to reevaluate the legitimacy of later, Mahayana texts and consider them more sympathetically.