Ermentrude Of Orleans (also Hirmentrude, Irmintrud, 823-869 AD) was a Frankish noblewoman. Daughter of Odo, Count of Orleans and Engeltrude, she married Charles the Bald, King of France in 842.

She was a gifted embroiderer and was interested in religious foundations. Charles gave her the nunnery of Chelles . She died in 869.

Her known children included Judith, Louis the Stammerer, Charles of Aquitaine , and Carloman of France.