| Weir Lake | |
| Location: | Census Division 23, Northern Region, Manitoba |
| Coordinates: | 57.0003°N -94.5828°W |
| Part Of: | Hudson Bay drainage basin |
| Outflow: | Weir River |
| Basin Countries: | Canada |
| Length: | 4.3km (02.7miles) |
| Width: | 3.8km (02.4miles) |
| Elevation: | 186m (610feet) |
| Pushpin Map: | Manitoba#Canada |
| Pushpin Map Caption: | Location of the lake in Manitoba |
Weir Lake is a lake in census division 23 in Northern Manitoba, Canada. It is in the Hudson Bay drainage basin and is the source of the Weir River.