Oromocto is a Canadian town in Sunbury County, New Brunswick. The town is located on the west bank of the Saint John River at the mouth of the Oromocto River, approximately 20 kilometres southeast of Fredericton. The town's name is derived from the name of the Oromocto River; "oromocto" is thought to have originated from the Maliseet word welamukotuk which means "deep water". It appears on early maps as Ramouctou and La Rivière du Kamouctou.