Isidore De Loor (18 April 1881 - 6 October 1916), also known by his religious name Isidore of Saint Joseph, was a Belgian professed religious from the Passionists.
He served in various capacities at the convents that he served like being a janitor or a cook for his fellow religious though his cancer never limited his work for others.His beatification was held on 30 September 1984.