Alberto Dou Mas de Xaxàs (21 December 1915, Olot–10 April 2009, San Cugat del Vallés) was a Spanish Jesuit and mathematician. He was author of numerous studies and works on mathematics and physics; contributor to numerous specialised journals (member of the advisory board of Theoria), as well as numerous manuals for the study of both sciences.

In 1960, he was elected president of the Royal Spanish Mathematical Society.