The national flag of Estonia is a tricolour featuring three equal horizontal bands of blue (top), black, and white. The proportion of the flag is 7:11, with a nominal size of 105 ÃÂ 165 cm. In Estonian it is called the "" (literally "blue-black-white"), after the colours of the bands. The flag became associated with Estonian nationalism in the beginning of the 20th century and was used as the national flag () when the Estonian Declaration of Independence was issued on 24 February 1918. The flag was formally adopted on 21 November 1918, and on 12 December the same year the flag was raised for the first time as the national symbol atop of the Pikk Hermann tower in Tallinn. Starting in 1940, the flag and its colours were banned in Soviet-occupied Estonia, until the flag was restored to the top of Pikk Hermann on 24 February 1989 and reinstated as the state flag on 7 August the next year.
The following is a list of flags associated with Estonia.
Each county of Estonia has adopted a flag, each of them conforming to a pattern: a white half at the top bearing the county's coat of arms in the middle, and a green half at the bottom.