| Madawaska Valley | |
| Official Name: | Township of Madawaska Valley |
| Settlement Type: | Township (lower-tier) |
| Flag Size: | 120x100px |
| Pushpin Map: | CAN ON Renfrew#Canada Southern Ontario |
| Subdivision Type: | Country |
| Subdivision Name: | Canada |
| Subdivision Type1: | Province |
| Subdivision Name1: | Ontario |
| Subdivision Type2: | County |
| Subdivision Name2: | Renfrew |
| Established Title: | Settled |
| Established Title2: | Formed |
| Established Date2: | January 1, 2001 |
| Leader Title: | Mayor |
| Leader Name: | Mark Willmer |
| Leader Title1: | Federal riding |
| Leader Name1: | Renfrew—Nipissing—Pembroke |
| Leader Title2: | Prov. riding |
| Leader Name2: | Renfrew—Nipissing—Pembroke |
| Area Land Km2: | 665.83 |
| Population As Of: | 2021 |
| Population Total: | 3927 |
| Population Density Km2: | 5.9 |
| Timezone: | EST |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Postal Code Type: | Postal Code |
| Postal Code: | K0J |
| Area Code: | 613, 343 |
| Coordinates: | 45.5°N -117°W |
The Township of Madawaska Valley is a township municipality in Renfrew County, Ontario, Canada. It was formed in 2001 through the amalgamation of the village of Barry's Bay and the townships of Radcliffe and Sherwood Jones & Burns.
Its largest population centre is Barry's Bay, and it also includes the settlements of Combermere and Wilno.
In the 2021 Census of Population conducted by Statistics Canada, Madawaska Valley had a population of living in of its total private dwellings, a change of from its 2016 population of . With a land area of 665.83km2, it had a population density of in 2021.
Mother tongue (2021):
List of former mayors: