Helmut Dosch, born in 1955, is a solid-state physicist and Chairman of the Board of Directors of the Deutsches Elektronen-Synchrotron (DESY) in Hamburg, Germany. After studying and obtaining his doctorate in physics in Munich and working at Cornell University and the University of Wuppertal, he was Director at the Max Planck Institute for Metal Research in Stuttgart before moving to Hamburg in 2009. He is an expert in the use of synchrotron radiation to study surface and interface phenomena. Dosch became internationally known for his pioneering work in the field of phase transitions on surfaces, in particular his work on surface melting of ice and on critical phenomena at alloy interfaces. Dosch has received several awards for his research, including the Röntgen medal of the city of Remscheid and an honorary doctorate from the Kurchatov Institute in Moscow.