Luis J. Davidson San Juan ( September 10, 1921 – November 10, 2011 ) was a Cuban mathematician, professor and Doctor in Mathematics, known for his contributions to the fields of mathematics and pedagogy. He is renowned for receiving the Paul Erdős Award in 1992 by the International Commission on Mathematical Instruction, and for being awarded the distinction of Maestro Founder of Mathematics in Ibero-America by the Organization of Ibero-American States for Education, Science and Culture. He was the Vice President of the International Mathematical Olympiad Site Committee in 1988. And he is the author of many books, including Equations and mathematicians (2008), and Problems of elementary mathematics (1987).