Hedwig of Nordgau (c. 922 – after 993) was the wife of Siegfried of Luxembourg, first count of Luxembourg and founder of the country. They were married c. 950. She was of Saxon origin but her parentage is not known for certain. Some sources claim that she was connected to the family of Otto I, Holy Roman Emperor. Described as "saintly" herself, Hedwig of Nordgau was the mother of Saint Cunigunde of Luxembourg, the seventh of eleven children from her marriage to Siegfried.