Clarence Lemuel Elisha Moore was an American mathematics professor, specializing in algebraic geometry and Riemannian geometry. He is chiefly remembered for the memorial eponymous C. L. E. Moore instructorship at the Massachusetts Institute of Technology; this prestigious instructorship has produced many famous mathematicians, including four Fields Medal winners: Paul Cohen, Daniel Quillen, Curtis T. McMullen, and Akshay Venkatesh.