Paulo Ribenboim (born March 13, 1928) is a Brazilian-Canadian mathematician who specializes in number theory.

Ribenboim was born into a Jewish family in Recife, Brazil. He received his BSc in mathematics from the University of São Paulo in 1948, and won a fellowship to study with Jean Dieudonné in France at the University of Nancy in the early 1950s, where he became a close friend of Alexander Grothendieck.^[1] He has contributed to the theory of ideals and of valuations.^[2]

Ribenboim has authored 246 publications including 13 books. He has been at Queen's University in Kingston, Ontario, since the 1960s, where he remains a professor emeritus.

Jean Dieudonné was one of his doctoral advisors. Andrew Granville, Jan Minac, Karl Dilcher and Aron Simis have been doctoral students of Ribenboim.^[3]

The Ribenboim Prize of the Canadian Number Theory Association is named in his honor.

In 1951, Ribenboim married Huguette Demangelle, a French Catholic woman who he met in France. The couple have two children and five grandchildren, and have lived in Canada since 1962.^[4]

• Paulo Ribenboim (1964) Functions, Limits, and Continuity , John Wiley & Sons, Inc.
• Paulo Ribenboim (1968). La conjecture d'Artin sur les équations diophantiennes. Queen's papers in pure and applied mathematics. Kingston (Ontario): Queen's University.
• Paulo Ribenboim (1969). Rings and modules. New-York: John Wiley & Sons. ISBN 978-0470718056.
• Paulo Ribenboim (1972). Algebraic numbers. New-York: Wiley-Interscience. ISBN 9780471718048.
• Paulo Ribenboim (1972). L'arithmétique des corps. Méthodes. Paris: Hermann. ISBN 2-7056-5665-0.
• Paulo Ribenboim. (1989). The Book of Prime Number Records. Springer. ISBN 978-0-387-97042-4.
• Paulo Ribenboim. (1995). 13 Lectures on Fermat's Last Theorem. Springer-Verlag. ISBN 978-0-387-90432-0.
• Paulo Ribenboim. (1996). The New Book of Prime Number Records. Springer-Verlag. ISBN 978-0-387-94457-9.
• Collected Papers of Paulo Ribenboim. Queens Univ Campus. 1997. ISBN 978-0-88911-735-8.
• Paulo Ribenboim. (1999). The Little Book of Big Primes. Springer-Verlag. ISBN 978-0-387-97508-5.
• Paulo Ribenboim. (1999). The Theory of Classical Valuations. Springer-Verlag. ISBN 978-0-387-98525-1.
• Paulo Ribenboim. (2000). My Numbers, My Friends: Popular Lectures on Number Theory. Springer-Verlag. ISBN 978-0-387-98911-2.
• Paulo Ribenboim. (2000). Fermat's Last Theorem for Amateurs. Springer-Verlag. ISBN 978-0-387-98508-4.
• Paulo Ribenboim. (2001). Classical Theory of Algebraic Numbers. Springer-Verlag. ISBN 978-0-387-95070-9.
• Paulo Ribenboim. (2004). The Little Book of Bigger Primes. Springer-Verlag. ISBN 978-0-387-20169-6.
• Paulo Ribenboim. (2016). Prime Numbers, Friends Who Give Problems: A Trialogue with Papa Paulo. World-Scientific. ISBN 978-9-814-72581-1.