Home › Territories & Regions › Guam
Flag of Guam
Dark blue with a red border and a central island seal.
The flag of Guam is dark blue with a thin red border, and in the centre a pointed-oval seal showing an island scene — a coconut palm, a flying proa on the water, and the river mouth of the capital — with the word GUAM across it. Guam is an unincorporated territory of the United States in the western Pacific, the largest island in Micronesia.
About the Guam flag
The flag was adopted in 1948, based on a seal designed in 1917; the red border was added later. The seal is shaped like a Chamorro sling stone, an ancient Guamanian tool and weapon. Inside it, a coconut palm bends in the wind, a flying proa — a traditional fast sailing canoe — crosses Hagåtña Bay, and the mouth of the Hagåtña river meets the sea, together standing for Guam's land, sea and people. The blue field represents the ocean and sky, and the red border recalls the blood shed by the Chamorro people through Guam's history.
Guam flag colours
The Guam flag is blue and red, with green, yellow and blue in the island seal. These are the approximate shades:
Guam flag facts
Frequently asked questions
What does the flag look like?
Dark blue with a thin red border and a central pointed-oval seal — a palm, a proa boat and the word GUAM.
What does the seal show?
A coconut palm, a flying proa (sailing canoe) and the Hagåtña river mouth — Guam's land, sea and people. Its shape is a Chamorro sling stone.
Is Guam part of the US?
It's an unincorporated U.S. territory; people born there are U.S. citizens. Not a separate UN country, so it sits here under Territories & Regions.
When was the flag adopted?
In 1948, based on a 1917 seal design; the red border was added later.