Dean Constantin (born Dean Constantin Tsanti Gaigani) is a Belgian, Luxembourgish actor, screenwriter and director. He is the son of Greek parents and was raised in Belgium, but also briefly in the state of Wyoming, USA and then Larissa, Greece.

He lives in Luxembourg and Paris, France. He holds a BA and an MA in Cultural studies, Comparative Literature, Cinema and an MBA from Paris-Sorbonne University and the University of Luxembourg. As a teenager and during his young adulthood, he was a professional soccer player and had a brief spell in AEK Athens F.