| Republic of Ragusa | |
| Use: | 111000 |
| Proportion: | 2:3 |
| Adoption: | Republic of Ragusa |
| Use2: | State and War flag and Naval Ensign |
| Proportion2: | 2:3 |
| Image3: | St. Blaise - Civil Ensign of the Ragusan Republic.svg |
| Use3: | 000100 |
| Proportion3: | 2:3 |
| Image4: | Secondary flag of Republic of Ragusa.svg |
| Use4: | Secondary ensign |
| Proportion4: | 2:3 |
The Flag of Dubrovnik is the symbol of the city of Dubrovnik, originating as the flag of the historical Republic of Ragusa.
The flag consists of a white field and gold border, charged with the icon and initials of Saint Blaise (Latin: Sanctus Blasius, Ragusan: Sveti Vlaho), a miracle-worker and national symbol of Ragusa considered the patron saint of both the Republic and modern Dubrovnik, with a feast day on 3 February.