| Flag |
Date |
Use |
Description |
 |
1973–1979 |
Third state flag of Equatorial Guinea |
A horizontal tricolor of green, white, and red with a blue isosceles triangle based on the hoist side and the emblem of Francisco Nguema centered in the white band.[4] |
 |
1969–1973 |
Second state flag of Equatorial Guinea |
Identical to the modern flag. |
 |
1968–1969 |
First state flag of Equatorial Guinea |
A horizontal tricolor of green, white, and red with a blue isosceles triangle based on the hoist side.[5] |
 |
1945–1968 |
Flag of Francoist Spain |
Similar to the previous flag, but with a bigger eagle. |
 |
1938–1945 |
Three horizontal stripes: red, yellow, and red, the yellow stripe being twice as wide as each red stripe with the francoist eagle coat of arms off-centred toward the hoist. |
 |
1936–1938 |
Three horizontal stripes: red, yellow, and red, the yellow stripe being twice as wide as each red stripe with the coat of arms centered in the yellow band. |
 |
1931–1936 |
Flag of the Second Spanish Republic |
A horizontal tricolour of red, yellow, and purple with the coat of arms centered in the yellow band. |
 |
1873–1874 |
Flag of the First Spanish Republic |
Three horizontal stripes: red, yellow, and red, the yellow stripe being twice as wide as each red stripe with the coat of arms off-centred toward the hoist. |
 |
1827–1858 |
Flag of the United Kingdom (during the British rule in Bioko) |
A superimposition of the flags of England and Scotland with the Saint Patrick’s Saltire (representing Ireland). |
 |
1808–1813 |
Flag of Napoleonic Spain |
A white field with the royal coat of arms off-centred toward the hoist. |
 |
1808–1813 |
Flag of the First French Empire |
A vertical tricolour of blue, white, and red. |
 |
1874–1931 |
Flag of the Kingdom of Spain |
Three horizontal stripes: red, yellow, and red, the yellow stripe being twice as wide as each red stripe with the royal coat of arms off-centred toward the hoist. |
| 1785–1873 |
 |
1662–1664 |
States Flag |
A horizontal tricolour of red, white, and light blue. |
 |
1662–1664 |
The Prince’s Flag (during the Dutch occupations of Annobón) |
A horizontal tricolour of orange, white, and blue. |
| 1641–1649 |
 |
1580–1701 |
Flag of the Kingdom of Spain | A red saltire resembling two crossed, roughly-pruned (knotted) branches, on a white field. |
 |
1578–1580 |
Flag of the Kingdom of Portugal |
A white field with the coat of arms in the center. |
 |
1521–1578 |
 |
1495–1521 |
 |
1485–1495 |
Five blue escutcheons each charged with five bezants on a white field. Border: red with seven yellow castles. |
 |
1472–1485 |
Five blue escutcheons each charged with an undetermined number of bezants on a white field. Border: red with yellow castles and a green cross of the Order of Aviz. |