| Province: | NB |
| Type: | NB |
| Route: | 940 |
| Maint: | New Brunswick Department of Transportation |
| Length Km: | 36 |
| Length Ref: | [1] |
| Length Round: | 1 |
| Direction A: | North |
| Direction B: | South |
| Terminus A: | and in Shemogue |
| Terminus B: | in Sackville |
| Previous Type: | NB |
| Previous Route: | 935 |
| Next Type: | NB |
| Next Route: | 945 |
Route 940 is a 35.2km (21.9miles) long north to south secondary highway in the southeastern portion of New Brunswick, Canada.
Most of the route is in Westmorland County.
The route's northern terminus is in Shemogue at Route 15 and Route 950. It travels southwest through a mostly treed area where it passes Square Lake. The route passes through Anderson Settlement, Centre Village then turns south in Midgic. The route again turns southwest passing through Ward then crosses the Tantramar River, entering Upper Sackville. The route passes Silver Lake then enters Middle Sackville then crosses Route 1 Exit 504 as it enters Sackville. The route passes Sackville Waterfowl Park on the Tantramar Marsh then the Tantramar Civic Centre ending at Route 106.