The Massawippi River is a river in the Estrie region of Quebec, Canada. It is a tributary of the Saint Lawrence River. The hamlet of Massawippi was founded in 1800 by Loyalists. The name Massawippi could come from the Algonquin term nasawipi which means "between the waters". (Nasaw for between or middle and nipi for water.) The term could also come from Abenaki and mean "much clear water." Although the two versions may exist, several places in the area are named by the words used by the Abenaki such as Magog, Lake Memphremagog, Coaticook and Mégantic.