Julio Mario Santo Domingo Pumarejo (October 16, 1923 – October 7, 2011) was a Colombian businessman, diplomat and patriarch of the wealthy Santo Domingo family. He controlled more than 100 companies in the diversified portfolio of the "Santo Domingo Group." He was listed by Forbes magazine as one of the wealthiest men in the world, and the second wealthiest in Colombia, with a fortune of $8 billion US dollars. He was the founder of a philanthropic foundation, named to honor his father, that benefits Colombia's social development.