Ottilia is a feminine name and may refer to:
People (given name) Saint Ottilia (c. 662 – c. 720), Roman Catholic saint Ottilia Adelborg (1855–1936), Swedish children's book illustrator Ottilia Borbáth (born 1946), Romanian actress Ottilia Littmarck (1834–1929), Swedish actress and theatre director Ottilia Reizman (1914–1986), Russian camerawoman and filmmaker
Other 401 Ottilia, a large main-belt asteroid
See also Ottilie