Flag of Manitoba
| Use | Civil and state flag |
|---|---|
| Proportion | 1:2 |
| Adopted | May 11, 1965 (first flown on May 12, 1966) |
| Design | A Red Ensign with the shield of the coat of arms of Manitoba in the field |
| Canadian Heraldic Authority Design | |
| Proportion | 1:2 |
| Design | A Red Ensign with a modified shield of the coat of arms of Manitoba in the field |
The official flag of the Province of Manitoba is the Red Ensign bearing the shield of the provincial Coat of Arms. It was given royal approval by Her Majesty Queen Elizabeth II in October 1965 and was officially proclaimed by the Legislative Assembly of Manitoba. on 12 May 1966. The flag was adopted in the period after the national Flag of Canada was proclaimed and when most Canadian provinces and territories adopted flags. With the demise of the Canadian Ensign as a national symbol, both Manitoba and Ontario chose to adopt provincial flags based on its design to commemorate and preserve its longstanding association with Canada.