Raoul VIII of Beaumont-au-Maine (d.1238/1239), was the Viscount of Sainte-Suzanne and Beaumont-sur-Sarthe. He was the son of Richard I of Beaumont and of Luce de L'Aigle.

Raoul succeeded his father in 1197, and took the title of Beaumont in an exchange between Étival-en-Charnie and Robert de Chemillé. He, initially, supported Duke Arthur I of Brittany, against King John of England, like other lords of Le Mans. Raoul made his peace with the John of England, asking him not to believe those who had done him a disservice and to accept his services.

Arthur and King Philip II of France, Raoul's allies, resumed the fight against King John, ensuring the possession of Domfront to him. Raoul paid homage to the king in 1210. Raoul led a detachment of troops in support of Philp at the battle of Bouvines in 1214.^[1] In 1216, he renewed his oaths of loyalty to Philip II and gave his son Richard II of Beaumont as a hostage.

Ralph joined Prince Louis in the invasion of England. Ralph was excommunicated along with Prince Louis and his army. He returned to France sick, was absolved, vowed to leave for the Holy Land. Ralph join the Fifth Crusade along with Ranulf de Blondeville, 6th Earl of Chester, the Earl of Nevers, Oliver fitz Regis, illegitimate son of John of England, and the Counts of La Marche and Bar. He was at the Siege of Damietta in 1219 and was captured by the Ayyubids.^[2] Raoul returned to France around 1222/1223. Before leaving with Louis VIII of France against the Albigensians in 1226, Raoul had paid prior of Vivoin 300 livres for his bloodletting.

Raoul renewed his family's gifts to the abbeys of la Couture, Étival and Évron. He gave to Saint-Aubin d'Angers the chapel of Raillou, for the salvation of Richard, his father. We see him carry out the project of founding an anniversary for Richard, his elder brother, and conclude with the chapter of Le Mans a deal that the wars of the time had prevented him from carrying out: the exchange for an annuity of 110 sols of the château du Bourg-l'Évêque, called Bourg-le-Roi since his father held it for Henry II and Richard I of England.

William of Beaumont, bishop of Angers, under English influence, exhorted his brother, to respect the legacies of King Richard in favor of the abbey of Mélinais. Raoul gave to the abbaye de Mélinais, his rights over the Loir, from Polers to Port-Chevache; to the Abbey of Évron, an annuity on Sainte-Suzanne; to the Abbey of la Couture, new advantages in Loué; to Étival, 10 livres of annuity on Sainte-Suzanne and Beaumont. Raoul approved the sale by the Cistercians of the Abbey of Bellebranche to the Chartreux du Parc.

Raoul died on 11 August 1237 and was buried at the Abbey of Étival-en-Charnie.

Raoul and Agnes had:

• Richard II of Beaumont (d. 17 September 1242), who succeeded his father, married Mathilde d'Amboise, daughter of Sulpice III of Chartres^[3]
• William de Beaumont (d. 1241/1242), knight in 1236, ratifying the gift of Raoul, his brother to the Chartreuse du Parc-en-Charnie, and another of the same to the chapter of Saint-Pierre-la-Cour, 1237. His name is mentioned in the title of a charter of 1238, copied for Gaignières
• Agnes de Beaumont (b. 12 February 1253 - d. 9 May 1301), Viscountess of Beaumont-au-Maine, Lady of La Flèche, Fresnay, Sainte-Suzanne, du Lude and Château-Gontier, married(12 February 12, 1253) Louis of Brienne, becoming Viscount of Beaumont^[3]

• Paris, Matthew (2012). Chronica Majora. Vol. 7. Cambridge University Press.
• Pollock, M.A. (2015). Scotland, England and France after the Loss of Normandy, 1204-1296. The Boydell Press.
• Jordan, Alyce A. (2017). "Postcolonising Thomas Becket: The Saint as resistant site". In Frojmovic, Eva; Karkov, Catherine E. (eds.). Postcolonising the Medieval Image. Routledge. pp. 169–195.