The Township of Mariposa was a municipality located in the southwest corner of the former Victoria County, now the city of Kawartha Lakes, in the Canadian province of Ontario. The other municipal neighbours of Mariposa are Ops and Fenelon on the east, Eldon on the north, Brock on the west, and Scugog on the south, with the latter two located in the Durham Regional Municipality. The former township includes the communities of Little Britain, Manilla, Mariposa, Valentia, and Oakwood.