List of numbered roads in Waterloo Region

The following is a list of numbered roads in the Regional Municipality of Waterloo, Ontario.

Regional roads are maintained by the Waterloo Region Transportation Department, and highways are maintained by the Ontario Ministry of Transportation, except where they are locally maintained as Connecting Links.

The following is a list of provincially maintained highways in Waterloo Region.

Communities are ordered by where the route encounters them (either from south to north or from west to east).