The following is a list of Marquis or Margraves of Namur. Namur was not often an independent state, rather under the dominion of other entities like the counties of Hainaut and Flanders or the Duke of Burgundy.

Succession is from father to son, unless otherwise noted

Counts of Namur

House of Luxemburg

• Albert I (r. 992 – 1011)
• Robert I (r. 1011 – 1016)
• Albert II (r. 1016 – 1037)
• Albert III (r. 1037 – 1102)
• Godfrey I (r. 1102 – 1139)
• Henry the Blind (r. 1139 – 1189) also Count of Luxemburg
  • Sister Alice of Namur married Baldwin IV, Count of Hainaut

Marquis (Margraves) of Namur

House of Hainaut

• Baldwin I (r. 1189 – 1195), also Count of Hainaut; nephew
• Philip I (r. 1195 – 1212) son
• Yolanda of Hainaut (r.1212 – 1217), also Empress of the Latin Empire; sister
  • married Peter of Courtenay, Latin Emperor

House of Courtenay

• Philip II (r. 1217 – 1226) son
• Henry II (r. 1226 – 1229) brother
• Margaret (r. 1229 – 1237) sister
• Baldwin II (r. 1237 – 1256) also Latin Emperor; brother

House of Vianden

• Henry III (r. 1256 – 1265) nephew?

House of Flanders

• Guy of Dampierre (r. 1265 – 1297) also Count of Flanders
• John I (r. 1297 – 1330)
• John II (r. 1330 – 1335)
• Guy II (r. 1335 – 1336) brother
• Philip III (r. 1336 – 1337) brother
• William I (r. 1337 – 1391) brother
• William II (r. 1391 – 1418)
• John III (r. 1418 – 1421; died 1429) brother

In 1421, John III of Dampierre, Marquis of Namur, sells his estates to Philip the Good, Duke of Burgundy