Maria of Enghien, also known as Marie of Enghien or d'Enghien, was the Lady of Argos and Nauplia in Frankish Greece from 1376 or 1377 to 1388. She inherited the estate from her father, Guy of Enghien, when she was a minor. Her paternal uncle, Louis of Enghien, served as her regent. Louis gave Maria in marriage to a Venetian patrician, Pietro Cornaro, in 1377. Maria moved to Venice, but she was involved in the administration of her lordship. After her husband died, she sold the lordship to the Republic of Venice for a regular income in 1388.