Roberval is a city on the south-western shore of Lac Saint-Jean in the Le Domaine-du-Roy Regional County Municipality of Quebec, Canada. With a population of 10,544 in the Canada 2006 Census, it is the third largest city on this lake after Alma and Dolbeau-Mistassini. It is the seat of the Domaine-du-Roy RCM and the main service centre for the region with a hospital and some government services. It is also the seat of the judicial district of Roberval.
Circa 1850, the first settlers began to colonize the area, followed afterwards by families especially from the Charlevoix area. The settlement, the oldest village on the shores of Lake Saint-Jean, was first known as Notre-Dame-du-Lac-Saint-Jean, named after the parish founded in 1854. A few years later in 1857, the Municipality of Lac-Saint-Jean was formed but in 1859 was split into several municipalities including the Municipality of Roberval. It was named after the geographic township of Roberval, which in turn was named by surveyor Joseph Bouchette in honour of the first Lieutenant General of New France Jean-François de la Roque de Roberval (1496–1560). In 1862, the Roberval post office opened.