List of numbered roads in Lennox and Addington County
This is a list of numbered county roads in Lennox and Addington County, Ontario.
| County Road # | Local Name | Western/Northern Terminus | Eastern/Southern Terminus | Settlements served | Additional Notes |
| 1 | Belleville Road Camden Road Newburgh Road Yarker Road | Deseronto Road | Camden-Portland Boundary Road | Napanee, Newburgh, Yarker | |
| 2 | County Road 2 Dundas Street, Main Street | Deseronto Road | Neil Road | Napanee, Odessa | Main east-west provincial highway, decertified 1998. Continues west as Dundas Street, Deseronto, and east as Princess Street, Kingston |
| 3 | Napanee Road, Marlbank Road | Cold Water Road | County Road 41 | Marlbank | loops around as Napanee Road, Hastings, and becomes County Road 13 |
| 4 | Tamworth Road County Road 4 | County Road 41 | King's Highway 33 | Tamworth, Millhaven | |
| 5 | Palace Road County Road 5 | County Road 2 | County Road 4 | Napanee | |
| 6 | County Road 6 Wilton Road | County Road 14 | King's Highway 33 | Moscow, Colebrook, Yarker, Odessa, Bayview | |
| 7 | County Road 7 | County Road 2 | King's Highway 33 | Bath | |
| 8 | County Road 8 | Dundas Street, Napanee | King's Highway 33 | Adolphustown, Napanee | |
| 9 | River Road County Road 9 | County Road 8 | County Road 8 | Napanee, Greta, Bethany, Huff Wharf, Watercombe | |
| 10 | Deseronto Road | This road is the boundary between Lennox and Hastings counties. | |||
| 11 | County Road 11 | Deseronto Road | Main Street | Selby, Newburgh | |
| 12 | County Road 12 | Deseronto Road | County Road 41 | Forest Mills | |
| 13 | County Road 13 | County Road 41 | Youngs Road | Erinsville | |
| 14 | County Road 14 | County Road 41 | Deerhurst Lane | Reidville, Enterprise | |
| 15 | County Road 14 | Frontenac County limits | County Road 4 | Gull Creek, Tamworth | continues north to King's Highway 7 as Arden Road |
| 16 | County Road 16 | County Road 11 | County Road 1 | none | minor connecting route |
| 17 | County Road 17 | County Road 4 | County Road 27 | Newburgh | minor connecting route |
| 18 | County Road 18 | County Road 1 West | County Road 5 | none | minor connecting route |
| 19 | County Road 19 | County Road 6 | Howes Road | Odessa | |
| 20 | County Road 20 | County Road 6 | Florida Road | Wilton | |
| 21 | County Road 21 | County Road 8 | King's Highway 33 | Galts Corner | minor connecting route |
| 22 | County Road 22 | County Road 8 | County Road 7 | Millers Corners | |
| 23 | Taylor Kidd Boulevard | County Road 4 | County Road 24 | Amherstview, Millhaven | extension of Kingston suburban route as Taylor Kidd Boulevard, then becomes John Counter Boulevard in Kingston |
| 24 | Coronation Boulevard | Woodbine Road | King's Highway 33 | Amherstview | western boundary of Kingston, eastern boundary of Lennox County |
| 25 | County Road 25 | South Shore Road | County Road 8 | The Pines | |
| 26 | Jim Snow Drive | Taylor Kidd Boulevard | King's Highway 33 | Millhaven | minor connecting route, serves a Bombardier factory near Millhaven |
| 27 | County Road 7 | County Road 14 | County Road 1 | Croydon, Newburgh | |
| 28 | Millhaven Road | County Road 4 | County Road 6 | Links Mills, Asselstine, Odessa | |
| 29 | Flinton Road Bridge Water Road | Hastings County limits | King's Highway 41 | Flinton, Flinton Corners | continues through Hastings County as Flinton Road to King's Highway 7 |
| 30 | Buckshot Lake Road | King's Highway 41 | Frontenac County limits | Vennachar, Vennachar Junction | veers into Hastings County briefly near Russ Brown Road; continues through Hastings County to Plevna |
| 41 | County Road 41 Centre Street North and Centre Street South | Palace Road/River Road/County Road 8 intersection, Napanee | King's Highway 7 | Kaladar, Napanee | continues north as King's Highway 41 to Pembroke and south as Lennox county road 8 to Adolphustown |