| Blytheswood | |
| Subdivision Type: | Country |
| Subdivision Name: | Canada |
| Subdivision Type1: | Province |
| Subdivision Name1: | Ontario |
| Subdivision Type2: | Region |
| Subdivision Name2: | Southwestern Ontario |
| Subdivision Type3: | County |
| Subdivision Name3: | Essex |
| Subdivision Type4: | Municipality |
| Subdivision Name4: | Leamington |
| Pushpin Map: | Ontario |
| Pushpin Map Caption: | Location of Blytheswood in Ontario. |
| Coordinates: | 42.1211°N -82.5947°W |
| Elevation M: | 194 |
| Population Density Km2: | auto |
| Timezone1: | Eastern Time Zone |
| Utc Offset1: | -5 |
| Timezone1 Dst: | Eastern Time Zone |
| Utc Offset1 Dst: | -4 |
| Postal Code Type: | FSA |
| Postal Code: | N8H |
| Area Codes: | 519, 226 |
Blytheswood is a small community located in the township of Leamington (formerly Mersea), Essex County, in southwestern Ontario, Canada. The village is at the intersection of Ontario Highway 77 and Concession 8. Blytheswood's more recognized businesses are the Jones Popcorn family farm and Setterington's farm supply depot. Blytheswood and the surrounding area of Leamington are experiencing a boom in greenhouse development for agricultural products supplied to H. J. Heinz Company. The community has a population of about 50 people and the school for this area is Mount Carmel – Blytheswood Public School.