Marcel Otte (born 5 October 1948) is a professor of Prehistory at the Université de Liège, Belgium.

[1] He is a specialist in Religion, Arts, Sociobiology, and the Upper Palaeolithic times of Europe and Central Asia.

[2] In the book Speaking Australopithecus (written together with the philologist Francesco Benozzo) he argues from the archaeological point of view Benozzo's hypothesis that human language appeared with Australopithecus, between 4 and 3 million years ago.

[3] Otte is one of the only advocates of the Paleolithic continuity theory, which states that Indo-European languages originated in Europe and have existed there since Paleolithic times.

[4] He first advocated that theory in work published in 1995.