Count of Hainaut

The Count of Hainaut was the ruler of the county of Hainaut, a historical region in the Low Countries

 uncertain) Amaury (fl. 953-973)
 (uncertain) Werner (r. 973)
 Arnulf of Valenciennes (d. 1011/1012), also probably count of Cambrai
 Baldwin IV (r. 988–1035)
 Baldwin V (r. 1035–1045)
 Herman (r. 1039–1051),
 Baldwin I (r. 1051–1070), also Count of Flanders
 Arnulf I (r. 1070–1071), also Count of Flanders
 Baldwin II (r. 1071–1098),
 Baldwin III (r. 1098–1120),
 Baldwin IV (r. 1120–1171), 
 Baldwin V (r. 1171–1195), also Count of Flanders from 1191
 Baldwin VI (r. 1195–1205),  also Count of Flanders and Latin Emperor of Constantinople
 Joan (r. 1205–1244), also Countess of Flanders
 Margaret I (r. 1244–1253),
 John I (r. 1253–1257)
 Margaret I (r. 1257–1280),
 John II (r. 1280–1304), 
 William I (r. 1304–1337), 
 William II (r. 1337–1345), 
 Margaret II (r. 1345–1356),  one century later Jacqueline was opposed by her uncle John, Duke of Bavaria-Straubing, son of Count Albert I in a war of succession. John's claims devolved upon Philip III, Duke of Burgundy, a nephew of William IV,