List of numbered roads in Lanark County
This is a list of numbered county roads in Lanark County, Ontario.
| County Road # | Local Name(s) | Northern/Eastern Terminus | Southern/Western Terminus | Settlements served | Additional Notes |
|---|---|---|---|---|---|
| 1 | Rideau Ferry Road | Highway 7 | Rideau Canal | Perth, Rideau Ferry | continues as Leeds & Grenville County Road 1 to Lombardy |
| 2 | Heritage Drive | City of Ottawa limits | Grenville County limits | continues as City of Ottawa Road 2 | |
| 4 | Roger Stevens Drive | Montague Boundary Road | Highway 15 | Smiths Falls | |
| 6 | Althorpe Road Christie Lake Road Sunset Boulevard |
County Road 1 | County Road 36 | Althorpe, DeWitts Corners, Glen Tay, Perth | |
| 7 | Fallbrook Road | County Road 511 | County Road 12 | Playfairville, Fallbrook, Balderson | |
| 7B | Townline Road | County Road 29 | Highway 7 | Carleton Place | |
| 8 | Herron Mills Road Watsons Corners Road |
County Road 16 | County Road 511 | Herron Mills, Watsons Corners, McDonalds Corners | |
| 9 | Tatlock Road | Highway 7 | County Road 511 | Union Hall, Clayton, Halls Mills, Tatlock | |
| 10 | Scotch Line Gore Street North Street Drummond Concession 2 Richmond Road |
Leeds County limits | Ashton Station Road | Franktown, Perth, Scotch Line | shares Gore Street, Perth, with County Road 43; part of a relay of County Roads 10 linking Richmond to Kingston |
| 11 | Wilson Street River Road |
County Road 17 | County Road 29 | Appleton | |
| 12 | Pine Grove Road McDonalds Corners Road |
County Road 15 | County Road 36 | Lanark, Playfairville, McDonalds Corners, Elphin | |
| 14 | Narrows Lock Road | County Road 10 | Rideau Canal | Black lake, Narrows Lock | Continues as Leeds & Grenville County Road 14 to Crosby |
| 15 | Fergusons Falls Road | Highway 7 | County Road 511 | Fergusons Falls | |
| 16 | Lavant Road Wolf Grove Road |
County Road 29 | Frontenac County limits | Lavant, Poland, Hopetown, Middleville, Union Hall, Almonte | |
| 16A | Perth Street Bridge Street Queen Street |
County Road 17 | County Road 29 | Almonte | |
| 17 | Blakeney Road Panmure Road Mountain View Road Martin Street North Appleton Sideroad Cemetery Sideroad Derry Sideroad |
County Road 20 | County Road 10 | Pakenham, Blakeney, Almonte | |
| 18 | Port Elmsley Road | County Road 1 | County Road 43 | Port Elmsley | |
| 19 | Bennett Lake Road | County Road 7 | County Road 36 | Fallbrook, Pratt Corners | |
| 20 | Waba Road Kinburn Sideroad |
Timmins Road | Robertson Line | Pakenham | continues to Dunrobin Road as City of Ottawa Road 20 |
| 21 | Lally Road Elm Grove Road |
County Road 1 | County Road 14 | Murphy’s Point Provincial Park | |
| 22 | Shaw Road | County Road 29 | County Road 20 | Pakenham Township | minor connecting route |
| 23 | Rosedale Road | County Road 4 | County Road 43 | Rosedale | |
| 24 | Campbell Sideroad Bellamy Road Peneshula Road |
County Road 20 | Snye Road | Uneeda, Pickerel Bay | |
| 29 | County Road 29 McNeely Avenue |
Walter Bradley Road | Highway 7 | Pakenham, Almonte, Carleton Place | |
| 36 | Snow Road Maberly Elphin Road Bolingbroke Road |
Frontenac County limits | Leeds County limits | Elphin, Maberly, Bolingbroke | continues as Leeds & Grenville County Road 36 to Westport |
| 43 | County Road 43 Elmsley Street Cornelia Street Craig Street Gore Street North Street Wilson Street |
Grenville County limits | Highway 7 | Smiths Falls, Port Elmsley, Perth | shares Gore Street, Perth, with County Road 10; continues as Leeds & Grenville County Road 43 to Merrickville |
| 49 | March Road | Golden Line Road | County Road 29 | Almonte | March Road continues as City of Ottawa Road 49 to Highway 417 at Exit 138 |
| 511 | Lanark Road | Renfrew County limits | Highway 7 | Perth, Balderson, Lanark, Hopetown | continues as Renfrew County Road 511 to Calabogie |
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