Michele Rua (; 9 June 1837 – 6 April 1910) was an Italian Roman Catholic priest and professed member of the Salesians of Don Bosco. Rua was a student under Giovanni Bosco and was also the latter's first collaborator in the order's founding as well as one of his closest friends. He served as the first Rector Major of the Salesians following Bosco's death in 1888. He was responsible for the expansion of the Salesians and the order had grown to a significant degree around the world at the time he died. Rua served as a noted spiritual director and leader for the Salesians known for his austerities and rigid adherence to the rule. It was for this reason that he was nicknamed, 'the living rule'.