John II of Brienne, Count of Eu

John II of Brienne (c. 1274–1302), called Jean III in French, succeeded his father John I as count of Eu in 1294. He married Jeanne, heiress of Guînes, and pressed her claim before the Parlement of Paris.

Her grandfather had been forced to sell Guînes to Philip III in 1282. In February 1295 Philip IV restored the County of Guînes to the couple. On 11 July 1302 he was killed among the French chivalry at the Battle of the Golden Spurs near Kortrijk. His son Raoul succeeded to Eu.