Flags with a moon on them
The moon as itself, rather than as a crescent. 3 flags on this site carry one, and each says where that is written down.
- Laos
The national flag of the Lao People's Democratic Republic (Lao: ທຸງດວງເດືອນ, RTGS: thung duang duan, meaning 'Moon flag') consists of 3 horizontal stripes, with the middle stripe in blue being twice the height of the top and bottom red stripes.
Flag of Laos on Wikipedia
- Mongolia
The Soyombo symbol is a geometric abstraction that represents fire, sun, moon, earth, water, and a Yin and Yang symbol representing two fish as in Mongol mythology fish never sleep thus symbolizing that the spirit of the Mongol people never sleeps.
Flag of Mongolia on Wikipedia
- Palau
The full moon is a symbol of peace, love, and tranquility.
Flag of Palau on Wikipedia
How a flag gets onto this list
A flag is here because its own English Wikipedia article says so, in the sentence printed under it. Nothing was decided by looking at the picture: colours can be measured off a drawing and a lion cannot, so this list defers to a source anybody can check rather than to our opinion of what we are seeing.
That also means the list is short rather than wrong. Where an article never gets round to describing what is on the flag, that flag is missing from these lists even though the symbol is plainly there — and we would rather be caught missing one than caught inventing one.