Renfrew County is a county and census division in the Province of Ontario. It straddles the West Bank of the Ottawa River. There are 17 municipalities in the county including (but not limited to) Petawawa, Pembroke, Deep River, Chalk River, Eganville, Laurentian Valley, Westmeath and Beachburg. Its county seat is Pembroke, which is geographically within the county but administered independently.
Renfrew County is home to Garrison Petawawa and gives its name to The Lanark and Renfrew Scottish Regiment.
