Saint-Ubalde is a rural municipality in Portneuf County in the Canadian province of Quebec.Geographically its territory is marked by an agricultural and populated area in the south-west, and an undeveloped hilly area in the north-east where there are numerous lakes such as Blanc, Sainte-Anne, Ricard, and Thom. Therefore its economy is centred on potato cultivation and outdoor recreation (canoeing, water skiing, fishing).