Ingelger (845 - 888), also called Ingelgarius, was a Frankish nobleman, who was the founder of the County of Anjou and of the original House of Anjou. Later generations of his family believed that he was the son of Tertullus (Tertulle) and Petronilla.
Around 877, he inherited his father Tertullus' lands in accordance with the Capitulary of Quierzy, which Charles the Bald had issued. His father's holdings from the King included Château-Landon in beneficium, and he was a casatus in the Gâtinais and Francia. Contemporary records refer to Ingelger as a miles optimus, an excellent soldier.