Elections were held in Renfrew County, Ontario on October 25, 2010 in conjunction with municipal elections across the province.
County council has no direct elections; its membership is made up of the mayors and reeves of the lower-tier municipalities of the county, including the reeves (not the mayors) or Arnprior, Renfrew and Whitewater Region. Therefore, elections in those municipalities determine the members of council for the new term.
In Petawawa, voters elected six at-large councillors by casting their paper ballots in 19 polls at the Petawawa Civic Centre.