Atlasgeo.net: Belgium - Animated GIF image.
Flags of the World: Belgium - National, subnational, military, and historical flags and ensigns, as well as related laws and regulations.
Governments of the Communities and the Regions - Thumbnail images of the government flags and emblems.
Official Belgian Federal Government - Flags - Offers details on the feast days as well as flags and anthems of the communities and the regions.
Theodora.com: Belgium Flags - Images in several sizes and links to country facts.
Theodora.com: Flag of Brussels - Images in several sizes.
Theodora.com: Flag of Flanders - Images in several sizes.
Theodora.com: Flag of Wallonia - Images in several sizes.
World Flag Database: Belgium - National flags and ensigns, and flags of the regions and communities.