Rohrlich, David - Boston University. Number theory. Preprints, errata.
Rose, Harvey - University of Bristol. Problems concerning small classes of recursive functions; Number theory of elliptic curves. Publications, teaching material.
Rouse, Jeremy - University of Wisconsin-Madison. Number theory, with particular interest in elliptic curves and modular forms; Combinatorics. Publications.
Rubin, Karl - University of California, Irvine. Arithmetic algebraic geometry. Publications, lecture notes.
Rubinstein, Michael - University of Waterloo. Experimental number theory. Publications, software for L-functions, tables of modular polynomials.
Rudnick, Zeev - Tel-Aviv University. Number theory; quantum chaos.
Richert, Hans-Egon - Obituary from Universitaet Ulm. (November 25, 2003)