Eleftherios Goulielmakis (Ελευθέριος Γουλιελμάκης) is a Greek physicist specializing in lasers. He is a professor of physics at the University of Rostock, Germany where he currently leads the research activities of the Extreme Photonics group. Previously, he was the head of the research group "Attoelectronics" at the Max Planck Institute of Quantum Optics in Garching, Germany.