Saint Austregisilus (Outril(le), Aoustrille) (died 624) was bishop of Bourges from 612 to 624. His feast day is May 20. A native of Bourges, he was educated as a courtier. However, Austregisilus was desirous to become a monk and entered the abbey of Saint-Nizier at Lyon, where he became abbot. He was elected bishop of Bourges in 612.
He ordained Sulpitius the Pious and provided direction to Saint Amand.
The villages of Saint-Outrille and Saint-Aoustrille are named after him.