| Use: | 111110 |
| Proportion: | 2:3 |
| Design: | A vertical bicolor of green and white, with the red crescent encircling the red five-pointed star centered along the dividing line. |
| Use2: | Presidential standard |
| Proportion2: | 2:3 |
| Image3: | Naval Ensign of Algeria.svg |
| Use3: | 000001 |
| Proportion3: | 2:3 |
| Adoption3: | 27 June 1963 (amended in 1995) |
| Design3: | As above, with white crossed fouled anchors in the canton. |
| Image4: | Naval Jack of Algeria.svg |
| Use4: | Naval jack |
| Design4: | The national flag in the canton on a light blue field. |
The national flag of Algeria (Arabic: علم الجزائر) consists of two equal vertical bars, green and white, charged in the center with a red star and crescent, a symbol of Islam as the nation's prominent faith. The flag was adopted on 3 July 1962. A similar version was used by the Algerian government in exile from 1958 to 1962. The Western blazon is per pale vert and argent; a crescent and star gules.
Algerian ships fly it as their ensign, except for ships of the Algerian National Navy, which use one charged with two white crossed anchors in the canton as the naval ensign. Formerly, the two crossed anchors in the canton were red.
According to algeria-un.org, cited in 1999, the features of the flag are set down precisely, being described as: