Blessed Maria Pia Mastena (7 December 1881 - 28 June 1951) - born Teresa Maria - was an Italian Roman Catholic professed religious and the founder of the Religious Sisters of the Holy Face.
Mastena fostered a deep devotion to the Holy Face of Jesus and tried to promote that devotion to others in her religious career as a nun.
Mastena first desired the contemplative life but was denied this after she entered the convent since it was not a cloister.
Instead she dedicated herself to teaching in several Italian cities after having left another convent and another religious order when she deemed contemplative life was not the life she felt God wanted for her.
Her labors were dedicated instead to consolidating her new religious order which began to grow after World War II until her sudden death in 1951.Mastena's beatification process opened on 23 June 1990 under Pope John Paul II who later named Mastena as Venerable in 2002 after having confirmed her heroic virtue.