Spencerville is a rural community located in Eastern Ontario, within Edwardsburgh/Cardinal township in the United Counties of Leeds and Grenville. The village lies about 80 kilometers southwest of downtown Ottawa on Highway 416. The South Nation River runs through the village.

Edwardsburgh/Cardinal is a township in the United Counties of Leeds and Grenville of eastern Ontario, Canada. Edwardsburgh township was first surveyed in 1783, and incorporated in 1850. The township was part of the historical Grenville County before it merged with Leeds County to form the United Counties in the 19th century.