The County of Amiens (also: Amiénois) was a feudal state centred on the city of Amiens, northern France, that existed from the 9th century until 1077 when the last count became a monk and the county reverted to the French crown. In 1185 the county was united with the French crown under King Philip II of France.
Ermenfroi (before 895–919) also count of Vexin and Valois
Ralph I of Gouy (915-926), also probably Count of Ostervant, from 923 also count of Valois and Vexin, possibly brother-in-law or son-in-law of Ermenfroi (first house of Valois)
Ralph II of Vexin (Raoul de Cambrai) (926-944), Count of Valois, Amiens and Vexin, son of Ralph I.
Odo of Vermandois (941-944), son of Count Herbert II of Vermandois, usurped the county in 941, ejected by royal troops in 944.