Sadalberga (or Salaberga) (c. 605[1] – c. 670) was the daughter of Gundoin, Duke of Alsace and his wife Saretrude.

Gundoin of Alsace was on close terms with Waldebert, a Frankish nobleman who later became abbot of Luxeuil.

[2] Between 629 and 631, Gundoin removed the widowed Sadalberga from her convent of Remiremont and sought to marry her to a courtier of Dagobert I, at the king's insistence.

She had five children, Saretrude, Ebana, Anstrudis, Eustasius (died in infancy), and Baldwin (Baudoin).

Her husband Blandinus and two of her children, Baldwin (feast day October 16) and Anstrudis, became saints.