A roundel is a circular disc used as a symbol. The term is used in heraldry, but also commonly used to refer to a type of national insignia used on military aircraft, generally circular in shape and usually comprising concentric rings of different colours. Other symbols also often use round shapes.

Notable examples:

* United States has circle with a white star, with two white or white-and-red bars on the left and right side.
* Japan has a single red circle, mostly bordered with white.
* Germany has a black cross bordered with white.
* Britain has a blue, white, and red circle.
** Canada, Australia, and New Zealand replace the circle with a maple leaf, a kangaroo, and a kiwi bird respectively.
* France has a red, white, and blue circle.
* Italy has a red, white, and green circle. During World War II, it has white circle bordered in black with three black fasces in it.
* Russia and the Soviet union had a red five-pointed star. Belarus also uses this roundel.
* China also has a red star, but with a Chinese text meaning "8.1" and bordered by two red yellow-bordered bars.
* Taiwan and the former Republic of China has blue circle with a white sun with twelve rays.
* Sweden has a blue circle bordered in yellow with three gold crowns in it.
* Poland has a red and white checkerboard design.
* South Korea has a red and blue yin-yang bordered with three black bars on either side.
* Israel has a blue six-pointed star on a white circle.
* Indonesia has a white red-bordered pentagon design.
* The Philippines has a blue, white, and red diamond with wings.
* Finland has a white, blue, and white circle design. Formerly, they used a blue swastika on a white circle.


h4. See Also
* [[Balkenkreuz]]
* [[Nose Art]]
* [[Red Star]]
* [[Rising Sun Flag]]

h4. External Links
* "Wikipedia: Roundel":https://en.wikipedia.org/wiki/Roundel
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