Gerard P. Luttikhuizen (born 1940) is a Dutch scholar of early Christianity, the New Testament and other early Christian writings, and a Coptologist. He has worked at the University of Groningen throughout his career, first as a lecturer in 1969–1988, and as a full professor after 1988. He took emeritus status in 2005.
His areas of research include Gnosticism and the Nag Hammadi library, the ancient Coptic Church and Coptic language documents, the influence of Hellenistic philosophy on early Christianity and Gnosticism, and Jewish Christian sects including the Elcesaites and the religious community that influenced Mani.