This article is a list of the counts of Roucy. In medieval France, Roucy was a county held by a succession of noble families. By the Late Middle Ages, it was one of seven titles that was made a peer within the provincial peerage of the greater County and Province of Champagne up until the French Revolution.

First counts

c.950–967 : Renaud of Roucy, Count of Roucy and of Reims († 967): 967–c.1000 : Gilbert of Roucy, Count of Roucy and Viscount of Reims († c.1000), son of the former: c.1000–1033 : Ebles I of Roucy, Count of Roucy and Archbishop of Reims (1021–1033):

House of Montdidier

House of Pierrepont

Blazon of arms: Gules a chief indented Or. → Siblings of counts Simon and Robert II: Hugh of Pierrepont, Vidame of Laon by his marriage to Marie de Clacy-et-Thierret / Clacy; Béatrice, x Louis II of Sancerre <John III of Sancerre, and Louis of Sancerre, Marshal of France and Constable of France; Jeanne de Blaison and Chemellier / Chemillé, x the Grand Panetier and Marshal of France Charles I of Montmorency. → Siblings: John of Roucy, Bishop of Laon in 1386–1419; Marguerite x 1 ° Gaucher V de Nanteuil-la-Forêt (in the Montagne de Reims) and x 2 ° Robert III de Coucy-Pinon, great-grandson of Marshal Robert above (by another x that with Elisabeth of Roucy, Viscountess of Mareuil); Marie, x Jacques d'Enghien-Havré: maternal grandparents of Jean de Dunois. → Their daughters Marguerite, Lady of Albert, and Blanche of Roucy-Pierrepont, married respectively: in 1403 Thomas III del Vasto, Marquess of Saluzzo (hence Giovanna, Dame d'Encre, wife of Guy IV de Clermont-Nesle); and in 1414 Louis I of Bourbon-Vendôme, Count of Vendôme, Grand Master of France. → His sister Joan, x François d'Albret sire of Ste-Bazeille († 1435), first cousin of the Constable Charles I d'Albret, Bernard Ezi IV-V d'Albret.

House of Sarrebruck

House of Roye

→ Their daughter Éléonore, Dame de Conti, x Louis I, Prince of Conde: hence the following of the Princes of Conde and Conti.

House of La Rochefoucauld

House of Béthune

He is the last to bear the hereditary title of Count of Roucy. In 1767 he sold his title to a very distant cousin, Jacques Henri Salomon Joseph de Roucy (1747-1814), Lord of Manre (his family also owned Termes and Marvaux in the vicinity), from Hugues de Thosny and du Bois younger brother of Count Robert Guiscard above, known as Count of Roucy, field marshal and colonel of the Queen's cavalry regiment, husband of Marie Perrine de Scépeaux, but died without posterity in 1814.