List of numbered roads in Ottawa

Older signs installed prior to 2001 have the legend "Ottawa-Carleton" at the top with the route number underneath.

Newer signs installed after 2001 use the legend "Ottawa" or simply the "O" portion of the city's wordmark.

Most numbered-road signs are not marked with directional tabs indicating the direction of the road (i.e. North, South, East, West), but where these appear, they are always printed in both English and French.

[1][2] This effectively makes most Ottawa Roads within the greenbelt only used for internal purposes, as they are not signed.

Innes Road and Blackburn Hamlet Bypass portions may no longer be numbered.

Continues east as Prescott & Russell United Counties Road 17.