Edriss Saleh Titi (Arabic: إدريس صالح تيتي‎, Hebrew: אדריס סאלח תיתי‎; born 22 March 1957 in Acre, Israel) is an Arab-Israeli mathematician. He is Professor of Nonlinear Mathematical Science at the University of Cambridge. He also holds the Arthur Owen Professorship of Mathematics at Texas A&M University, and serves as Professor of Computer Science and Applied Mathematics at the Weizmann Institute of Science and Professor Emeritus at the University of California, Irvine.