Princess Mafalda may refer to:

Mafalda of Portugal (born 1153) (1153–1162) Mafalda of Castile (1191–1204) Mafalda of Portugal (1195–1256) Princess Mafalda of Savoy (1902–1944) Mafalda von Hessen (born 1965), also known as Princess Mafalda of Hesse Ona Mafalda (born 1994), also known as Princess Mafalda of Bulgaria