Belgium has a very diverse population and the three main laguages in Belgium are Dutch, German, and French and all are considered "official" according to the CIA World Factbook 2003 edition. Also Wikipedia also states these are the "official" languages of Belgium. According to Worldbook Encyclopedia also: Regions and language communities. Belgium is a federal state that has three regions, and it also has three separate language communities. The regions, which have a large degree of self-rule, are (1) Flanders, in the north, (2) Wallonia, in the south, and (3) the capital district of Brussels. The three language communities are (1) the Flemish community, which consists of people who speak Dutch; (2) the French-speaking community, and (3) the German-speaking community.

Not to split hairs... the official languages are Flemish, French, and German. Flemish is pretty much the same as Dutch... I'm not sure whether the "official" designation is that they're two separate languages or two dialects of the same language (although any linguist will tell you that that distinction is almost meaningless). Either way, though, they're not exactly the same. I don't know where the German came from. Most Belgians will speak either Flemish (in the north) or French (in the south) as their native language and be required to learn the other in school. All signs/product labels/etc. must be printed in both Flemish and French, and there is a lot of tension between the two groups. The French speakers are a slight majority and generally feel that the Flemish speakers should just learn French to assimilate, especially since current demographic changes show Flemish speakers moving into French-speaking territory looking for work. The Flemish speakers feel threatened by this and resist French as much as possible. One solution is the increased use of English, a "neutral" language. The French in France see English as a huge threat to their identity, but French-speaking Belgians actually welcome it.