List of highways numbered 640
# List of highways numbered 640

The following highways are numbered 640:

## Canada

* New Brunswick Route 640
* Quebec Autoroute 640
* Saskatchewan Highway 640

## Ireland

* R640 road (Ireland)

## United Kingdom

* A640 road

## United States

* I-640
* KY 640
* LA 640
* MD 640
* SR 640
* FM 640
* SR 640

| Preceded by 639 | Lists of highways 640 | Succeeded by 641 |
| - | - | - |
