| Sweltzer River | |
| Map Size: | 265 |
| Pushpin Map: | Canada British Columbia |
| Pushpin Map Size: | 265 |
| Pushpin Map Caption: | Location of the mouth of the Sweltzer River in British Columbia |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Province |
| Subdivision Name2: | British Columbia |
| Source1: | Cultus Lake |
| Source1 Location: | Cascade Mountains |
| Source1 Coordinates: | 49.0758°N -121.9814°W |
| Source1 Elevation: | 151feet[1] |
| Mouth: | Chilliwack River |
| Mouth Coordinates: | 49.0969°N -121.9639°W |
| Mouth Elevation: | 110feet[2] |
The Sweltzer River is a river in British Columbia, Canada, that drains the waters of Cultus Lake into the Chilliwack River. It is about 3km (02miles) long, and much of it runs through Soowahlie Indian Reserve No. 14, which is under the administration of the Soowahlie Indian Band.
The name Sweltzer River was applied on an 1895 map to Liumchen Creek, which is to the northeast.