Ansegisel (also Ansgise) (c.602-before 679) was the son of Saint Arnulf, bishop of Metz and his wife Doda. He served King Sigbert III of Austrasia (634-656), son of King Dagobert I (629-639), as a duke (Latin dux, a military leader) and domesticus.

He married sometime after 639 to Saint Begga, the daughter of Pepin of Landen. They had the following children:
• Pippin II (635 or 640-December 16, 714), mayor of the palace of Austrasia
• Martin, count of Laon
• Clotilda of Heristal (650-699), married King Theodoric III of Neustria

He was killed sometime before 679, slain in a feud by his enemy Gundewin.