Armenians in Belgium are citizens of Belgium of Armenian ancestry. The exact number of Armenians in the country is unknown, but is unofficially estimated to be about 40,000. One of the important sectors that Armenian communities in Belgium excel and involved in is the diamonds trade business, that based primarily in the diamond district. Some of the famous Armenian families involved in the diamond business in the city are the Artinians, Arslanians, Aslanians, Barsamians and the Osganians.