| Adoption: | 13th century |
| Proportion: | 2:1 |
| Design: | Six alternating blue and white bars |
The flag of Tallinn, the capital city of Estonia, consists of three blue and three white equally sized horizontal bars. Its official ratio of length and width is 2:1, and the normal size (as stipulated by law in 1996) is 160 × 80 cm.[1]
The three blue stripes on the flag of Tallinn (former Hanseatic city of Reval) have since the 13th century been based on the three blue lions of the coat of arms of Tallinn and Estonia.