This is a list of numbered roads in Haldimand County, Ontario. There are two classes of numbered roads in Haldimand County: regional roads, former King's Highways downloaded to county responsibility in the late 1990s, and county roads, analogous to the county roads of other counties.
| County Road # | Local Name(s) | Northern/Western Terminus | Southern/Eastern Terminus | Settlements served | Additional Notes |
|---|---|---|---|---|---|
| 2 | Caistorville Road | Niagara Region limits | County Road 14 | Canborough | |
| 3 | St. John's Road Rainham Road Dover Road North Shore Drive | Norfolk County limits | Niagara Region limits | Lambs Corners, Selkirk, Rainham Centre, South Cayuga, Byng, Dunnville, Stromness, Lowbanks | |
| 7 | Marshagan Road | Niagara Region limits | Moulton Station | ||
| 8 | Kohler Road | King's Highway 3 | Lake Shore Road | Kohler, Rainham Centre | |
| 9 | Concession 12 Walpole Parkview Drive Indian Line County Road 9 York Road | Norfolk County Road 74 | Niagara Region limits | Hagersville, Clanbrassil, Cranston, York, Empire Corners | shares Indian Line with County Road 20 from Parkview Drive to Concession 11 Walpole |
| 11 | Port Maitland Road | County Road 3 | the Grand River | Byng, Port Maitland West | |
| 12 | Fisherville Road | County Road 20 | County Road 3 | Fisherville | |
| 14 | Chippawa Street | Niagara Region limits | Canborough | ||
| 15 | Robinson Road | Niagara Region limits | King's Highway 3 | Attercliffe Station | |
| 17 | County Road 17 | Main Street, Dunnville | Cayuga, Dunnville | ||
| 18 | Sandusk Road | County Road 20 | County Road 3 | Sandusk, Lambs Corners | |
| 20 | Indian Line | County Road 20 | County Road 3 | East Oakland | shares Indian Line with County Road 9 from Parkview Drive to Concession 11 Walpole |
| 22 | McClung Road | Regional Road 54 | County Road 66 | none | minor connecting route |
| 27 | Concession 11 Walpole | Norfolk County road 74 | County Road 20 | none | minor rural route |
| 29 | 4th Line | Six Nations reserve limits | County Road 9 | Willow Grove, Cranston | |
| 32 | County Road 32 | County Road 17 | none | minor connecting route | |
| 33 | County Road 33 | Haldibrook Road | County Road 66 | none | minor connecting route |
| 49 | Aikens Road | County Road 3 | Lake Shore Road | James Allan Provincial Park | |
| 50 | County Road 50 | County Road 3 | Lake Shore Road | Upper, Bodri Bay | |
| 53 | Walpole-Rainham Road | County Road 20 | County Road 3 | Balmoral, Selkirk | |
| 55 | Nanticoke Road | County Road 20 | Hickory Beach Lane | Springvale, Hickory Beach | |
| 61 | Taylor Road | County Road 3 | Dunnville | minor connecting route | |
| 63 | Canborough Road | County Road 14 | Niagara Region limits | Canborough | |
| 64 | Rymer Road | Siddall Road | County Road 3 | Port Maitland East | |
| 65 | Hutchinson Road | King's Highway 3 | County Road 3 | Mount Carmel, Lowbanks | |
| 66 | County Road 66 Stoney Creek Road | County Road 22 | Haldibrook Road | none | minor rural route |
| 70 | Walpole-Woodhouse Line | King's Highway 3 | County Road 3 | Varency | |
| 74 | Townsend Parkway Keith Richardson Parkway | Norfolk County limits | King's Highway 3 | Townsend | |