Ralph II (died 943) was a French Count of the Vexin, Amiens and Valois from 926 to 943.
He was the son of Ralph I de Gouy, Count of Ostrevent, Vexin, Amiens and Valois.
In 941, Eudes de Vermandois, Count of Vienne, captured Amiens.
According to other sources, he tried to take advantage of the death of Count Herbert II of Vermandois to seize Saint-Quentin, but was killed by Herbert's son Adalbert, Castellan of Ribemont.
A few years later, Walter, Ralph's brother, reunited the three counties.