Józef Sebastian Pelczar (17 January 1842 – 28 March 1924) was a Polish Roman Catholic bishop and was also the co-founder of the Sister Servants of the Most Sacred Heart of Jesus which he had established in 1894 with Ludwika Szczęsna. He also served in several episcopal posts and served as the Bishop of Przemyśl. Pope John Paul II - on his fourth visit to Poland - beatified Pelczar in 1991 and presided over the canonization at Saint Peter's Square in 2003.