Ioannis Liritzis (Greek: Ιωάννης Λυριντζής; born 2 November 1953) is professor of physics in archaeology (archaeometry) and his field of specialization is the application of natural sciences to archaeology and cultural heritage. He studied physics at the University of Patras and continued at the University of Edinburgh, where he obtained his Ph.D. in 1980. Since then, he undertook postgraduate work at the University of Oxford, Université Bordeaux III, University of Edinburgh and the Academy of Athens.

Currently he is distinguished professor of archaeometry-Natural Sciences at the Henan University, Kaifeng, China and was professor in Archaeometry & Natural Sciences at the University of the Aegean and he directed and founded the Laboratory of Archaeometry (founded by him at 1999) and Lab of Environmental Archaeology. Director and initiator of the Masters course Applied Archaeological Sciences In the past he served as Head of the Department of Mediterranean Studie at the University of the Aegean, Member of the Senate of University of the Aegean and Member of the Executive Committee of National Recognition of Foreign Academic Diplomas. His prior career includes the Greek Ministry of Culture for 5 years (1984–1989) and the Academy of Athens for 10 years (1989–1999).