The count of Vermandois was the ruler of the county of Vermandois.

• Leodegar, Count of Vermandois (c. 484).
• Emerannus (c. 511), son of previous.
• Wagon I (c. 550).
• Wagon II (c. 600), son of previous.
• Garifrede (c. 660).
• Ingomar, Count of Vermandois (c. 680).

• Bernard, son of Charles Martel, abbot of St Quentin de Monte (now Mont-Saint-Quentin near Péronne).
• Jerome, brother of previous, count of Vermandois and abbot of St Quentin de Monte (714–771).
• Fulrad son of previous, abbot of St Quentin de Monte (after 771).
• Guntard, Count of Vermandois (771–833) and then abbot of St Quentin de Monte (till 833).
• Hugh, son of Charlemagne, abbot of St Quentin de Monte (833–844).
• Adalard, Count of Vermandois, son of Gisla, granddaughter of Charlemagne, count of Vermandois (833–864) and then abbot of St Quentin de Monte (844–864).
• Baldwin Iron Arm abbot of St Quentin de Monte (864–879).
• Teutricius (864–886) and then abbot of St Quentin de Monte (879–886) or Theodoric, Count of Vermandois (c. 876), a descendant of Childebrand, brother of Charles Martel.

• Pepin II of Vermandois, son of Bernard, King of Italy
• unknown
• Pepin III of Vermandois
• Herbert I, Count of Vermandois, also count of Senlis
• Herbert II, Count of Vermandois
• Adalbert I, Count of Vermandois, lord of Péronne and St Quentin
• Herbert III, Count of Vermandois
• Adalbert II, Count of Vermandois
• Otto, Count of Vermandois
• Herbert IV, Count of Vermandois
• Adelaide, Countess of Vermandois

• Hugh the Great, Count of Vermandois and Valois^[a][1] by marriage
• Ralph I, Count of Vermandois
• Ralph II, Count of Vermandois, son of Ralph I and Petronilla of Aquitaine
• Elisabeth, Countess of Vermandois
• Eleanor, Countess of Vermandois; died either childless or without any designated heirs, lands passed to French crown

Philip II of France added Vermandois to the royal domain.

The coats of arms of the counts of Vermandois were also adopted by Ralph I de Beaugency and William de Warenne, 2nd Earl of Surrey, when they each married daughters of Hugh the Great. It continues to be used by the relations of the de Warenne earl of Surrey, the duke of Norfolk as well as the flag of Surrey.

• Louis de Bourbon, comte de Vermandois (1669–1683), illegitimate son of Louis XIV and Louise de la Vallière, title held by appanage.

• Vermandois

• Anselme, Histoire Genealogique de la Maison royale de France, 1726.
• M. Fouquier-Cholet, Histoire des Comtes héréditaires du Vermandois, Saint-Quentin, 1832.
• Ioh. Mabillon, Annales ord. Sancti Benedicti. Ticinense. Lucae, 1739.
• Louis Moreri, Le Gran Dictionnaire Historique, Paris, 1743–1749.
• Gabriele, Matthew (2018). "The Provenance of the Descriptio Qauliter Karolus Magnus: Remembering the Carolingians in the entourage of King Philip I (1060–1108) before the First Crusade". Viator. 39 (2). University of California Press: 93-117.

• Marek, Miroslav. "Capetian counts of Vermandois". Genealogy EU.
• Marek, Miroslav. "Carolingian counts of Vermandois". Genealogy EU.