Communications in Belgium are extensive and advanced. Belgium possesses the infrastructure for both mobile and land-based telecom, as well as having significant television, radio and internet infrastructure. The country code for Belgium is BE.

Mail regulation is a national competency. Postal service in Belgium is in many cases performed by Belgian Post Group, a semi-privat public company which has as a monopoly on letters until 50g weight. Competitors include DHL and UPS.

Postal codes in Belgium consist of four digits which indicate regional areas, e.g. "9000" is the postal code for Ghent.

The telephone system itself is highly developed and technologically advanced, with full automation in facilities that handle domestic and international telecom. Domestically speaking, the county has a nationwide cellular telephone system and an extensive network of telephone cables. Telephone regulation is a national competency.

The country code for Belgium is 32 and the international call prefix is 00.

A telephone number in Belgium is a sequence of nine or ten numbers dialled on a telephone to make a call on the telephone network in Belgium. Belgium is under a closed telephone numbering plan, but retains the trunk code, "0", for all national dialling.

Belgium (ⁱ/ˈbɛldʒəm/ BEL-jəm), officially the Kingdom of Belgium, is a federal state in Western Europe. It is a founding member of the European Union and hosts the EU's headquarters, and those of several other major international organisations such as NATO. Belgium covers an area of 30,528 square kilometres (11,787 sq mi), and it has a population of about 11 million people. Straddling the cultural boundary between Germanic and Latin Europe, Belgium is home to two main linguistic groups, the Dutch-speakers, mostly Flemish (about 60%), and the French-speakers, mostly Walloons (about 40%), plus a small group of German-speakers. Belgium's two largest regions are the Dutch-speaking region of Flanders in the north and the French-speaking southern region of Wallonia. The Brussels-Capital Region, officially bilingual, is a mostly French-speaking enclave within the Flemish Region. A German-speaking Community exists in eastern Wallonia. Belgium's linguistic diversity and related political conflicts are reflected in the political history and a complex system of government.