The flag of Jamaica was adopted on 6 August 1962 (Jamaican Independence Day), the country having gained independence from the British-protected Federation of the West Indies. The flag consists of a gold saltire, which divides the flag into four sections: two of them green (top and bottom) and two black (hoist and fly). It is currently the only national flag that does not contain a shade of the colours red, white, or blue.

Prior to Jamaica's independence, the Jamaican government ran a flag design competition for Jamaica's new flag. Over 360 designs were submitted, and several of these original submissions are housed in the National Library of Jamaica. However, the competition failed to yield a winner, and a bipartisan committee of the Jamaican House of Representatives eventually came up with the modern design. It was originally designed with horizontal stripes, but this was considered too similar to the flag of Tanganyika (as it was in 1962), and so the saltire was substituted.