Flag of the Second Spanish Republic
| Tricolor | |
| Use | |
|---|---|
| Proportion | 3:5 |
| Adopted | 27 April 1931 |
| Bandera de la marina mercante (Civil Ensign) | |
| Use | |
| Proportion | 3:5 |
| Bandera militar (Military Flag) | |
| Use | |
| Proportion | 2:3 |
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The flag of the Second Spanish Republic, known in Spanish as la tricolor (the tricolour), was the official flag of Spain between 1931 and 1939 and the flag of the Spanish Republican government in exile until 1977. Its present-day use in Spain is associated with the modern republican movement, different trade unions and various left-wing political movements.