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

Beneficiary counts 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.
• Bertrude, daughter of previous and wife of Clotaire II, added Vermandois to the royal domain.
• Garifrede (c. 660).
• Ingomar, Count of Vermandois (c. 680).

Beneficiary counts of Vermandois and abbots of Saint Quentin de Monte

• 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.

Carolingian counts

• 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

Capetian counts

• 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.

Bourbon counts

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