| Demmitt | |
| Settlement Type: | Hamlet |
| Pushpin Relief: | yes |
| Pushpin Map: | Canada Alberta#Canada |
| Pushpin Map Caption: | Location of Demmitt |
| Subdivision Type: | Country |
| Subdivision Name: | Canada |
| Subdivision Type1: | Province |
| Subdivision Name1: | Alberta |
| Subdivision Type2: | Region |
| Subdivision Name2: | Northern Alberta |
| Subdivision Type3: | Census division |
| Subdivision Name3: | 19 |
| Subdivision Type4: | Municipal district |
| Subdivision Name4: | County of Grande Prairie No. 1 |
| Government Type: | Unincorporated |
| Leader Title1: | Governing body |
| Leader Name1: | County of Grande Prairie No. 1 Council |
| Established Title: | Established |
| Timezone: | MST |
| Utc Offset: | −07:00 |
| Timezone Dst: | MDT |
| Utc Offset Dst: | −06:00 |
| Coordinates: | 55.4556°N -119.8967°W |
| Postal Code Type: | Postal code |
| Area Code: | 780, 587, 825 |
| Blank Name: | Highways |
| Blank1 Name: | Waterways |
Demmitt is a hamlet in northern Alberta, Canada within the County of Grande Prairie No. 1. It is located on Highway 43, approximately northwest of Grande Prairie. The Northern Alberta Railway was built through the area in 1930 as it extended westwards towards Dawson Creek, British Columbia.