Saint Hildegarde of Bingen, medieval German mystic
(June) Hildegarde Flanner, American poet and activist
Hildegarde Naughton, Irish Senator
Hildegarde Dolson Lockridge, American novelist
Hildegarde Howard, American paleornithologist
Hildegarde of Burgundy, Duchess of Gascony and Aquitaine as wife of William VIII, Duke of Aquitaine
Hildegarde, character in "The South Wind of Love" by Compton Mackenzie
Hildegarde, female alter ego on TV's "Bosom Buddies" Princess Hildegarde, character on animated series "Sofia the First"
Hildegarde "Hildy" Johnson, character in film "His Girl Friday"