Jean I of Comminges

Jean I of Comminges (May 1336–1339) was the posthumous only son of Count Bernard VIII and Mathe de l'Isle-Jourdain. Under his father's will he was recognized from birth as count of Comminges and viscount of Turenne, under his mother's guardianship.

He died in early 1339. His death opened a violent succession dispute between his mother and sisters and his uncle Pierre-Raymond, who denied women the right to inherit.

After months of war and years of legal disputes, Pierre-Raymond secured Comminges. His sister Cécile was instead recognized as viscountess of Turenne.