List of duchesses consort of Brittany

Some consorts of the dukes of Brittany and its predecessor states had significant influence over their spouse.

Although there were six suo jure duchesses of Brittany, the husbands of those duchesses were jure uxoris dukes and not consorts.

Little is known about the duchesses whose husbands reigned prior to the year 900 besides their names.

Not all wives of the monarchs became consorts, as they may have died, been divorced, or had their marriage declared invalid prior to their husband's accession to the throne, or married him after his abdication.

Such cases include The succession was interrupted by the Norman occupation (907–937)