Maria Ludovica De Angelis was an Italian religious sister who dedicated her life to serving children in Argentina. Born Antonina De Angelis in 1880 in L'Aquila, she joined the Daughters of Our Lady of Mercy in 1904, adopting her religious name upon entering the congregation. After moving to Buenos Aires in 1907, she eventually settled in La Plata, where she played a central role in the administration and expansion of a local children's hospital. She died in 1962 and was later beatified by Pope John Paul II.