Flag of Merionethshire
| Proportion | 3:5 |
|---|---|
| Adopted | 2 January 2015 |
| Design | Azure, three goats rampant Argent, armed and unguled Or; from the dexter base the sun in his splendour issuant Or |
| Designed by | Traditional |
The Merionethshire flag (Welsh: Baner Sir Feirionnydd) is the flag of the historic Welsh county of Merioneth. It was registered with the Flag Institute as the official flag of the county on 2 January 2015.