The National Flag of Ireland is a tricolour of green white and orange. The flag is rectangular in shape, with its width being twice its depth. The colours are of equal size, with the green being next to the flagpole.

The flag was first introduced by Thomas Francis Meagher in 1848 who based it on French tricolour.

The green represents the older Gaelic tradition, while the orange represents the supporters of William of Orange. The white in the centre signifies a lasting peace between the 'Orange' and the 'Green'.

It was not until the Easter Rising of 1916, when it was raised above the General Post Office in Dublin, that the tricolour came to be regarded as the national flag, replacing older green flags.

The tricolour is now the official national flag and is enshrined in the Constitution of Ireland.