Mary Elizabeth Lange was an African-American religious sister who lived in the 19th century. Born in Haiti, she eventually immigrated to the United States and settled in Baltimore, Maryland. She is most recognized for establishing the Oblate Sisters of Providence in 1829, which was the first religious congregation for women of African descent in the country. As the first superior general of her order, she dedicated her life to providing Catholic education and support to the Black community during a period of significant social hardship.