Bertrada of Laon, also called Bertha of the Big Foot, (720 - July 12, 783) was a Frankish queen. She was born in Laon, in today's Aisne, France, the daughter of Caribert of Laon . She married Pippin III (Pippin the Short) in 740. Of her children with Pippin, two sons and one daughter survived to adulthood, including Charlemagne and Carloman.