The national flag of San Marino is formed by two equal horizontal bands of white (top) and light blue with the national coat of arms superimposed in the center; the coat of arms has a shield (featuring three towers on three peaks) with a closed crown on top, flanked by an oak and laurel wreath, with a scroll below bearing the word LIBERTAS (Freedom).

The two colors of the flag represent peace (white) and liberty (light blue).

[2] Some official sources of San Marino suggest that the civil flag is actually the bicolor with the coat of arms of the specific city it is used in, instead of the national one.

[6] The oldest attested standard of the republic dates back from 4 September 1465, when it was commissioned from a manufacturer in Florence, allegedly composed of a tricolour of gold, white and "alessandrino" (thought to be purple, recently re-interpreted as a shade of azure).

[7][8][9][10] In 1797, most likely influenced by the wave of reforms in France, the Supreme Council of the Republic commissioned a white and blue cockade, which, coincidentally or not, was identical to the one used by the French revolutionaries.