Constantine Michael Dafermos is a Greek-American applied mathematician. He received a diploma in civil engineering from the National Technical University of Athens (1964) and a Ph.D. in mechanics from Johns Hopkins University under the direction of Jerald Ericksen (1967). He has been an assistant professor at Cornell University (1968–1971) and an associate professor (1971–1975) and professor in the Division of Applied Mathematics at Brown University. Since 1984, he has been the Alumni-Alumnae University Professor at Brown.