John III of Dreux
John III (c. 1295–1331) was Count of Dreux and Braine, the second son of Count John II of Dreux and Jeanne of Beaujeu, lady of Montpensier. He succeeded his elder brother Robert V in 1329.
Around that time he married Ida, daughter of Guy II, lord of Rosny. The marriage was childless, and when John died in 1331 the county of Dreux passed to his younger brother Peter.