Maria Teresia Ledóchowska (1863–1922) was a Polish Catholic religious sister and noblewoman who dedicated her life to supporting missions in Africa. Born in Loosdorf, Austria, she served as a lady-in-waiting at the imperial court in Salzburg before transitioning to full-time missionary work. She is most recognized for founding the Missionary Sisters of St. Peter Claver, a congregation focused on evangelization and the fight against slavery. Through her prolific writing and publishing efforts, she became a vital advocate for African missions throughout Europe.