The Belgian franc was the currency of the Kingdom of Belgium from 1832 until 2002 when the euro was introduced. It was subdivided into 100 subunits, each known as a centiem in Dutch, or centime in French and German.

The gulden (guilder) of 20 stuivers was the currency of present-day Belgium from the 15th to 19th centuries until its replacement in 1832 by the Belgian franc. Its value differed from the gulden of the Dutch Republic during the latter's separation from Belgium from 1581 to 1816. Standard coins issued in Belgium include:

The French franc of 4.5 g silver arrived in Belgium following its occupation during the Napoleonic Wars. Its equivalence of 1 franc = 0.4725 gulden (or 9.52 g silver per exchange gulden, with the gulden currency abolished) doomed the rollout of the higher-valued Dutch guilder, since 20 francs can purchase 9.45 silver guilders which can be melted down to recover 90.84 g fine silver worth 20.19 francs. Following independence from the Kingdom of the Netherlands, the new Kingdom of Belgium abolished the gulden in 1832 in favor of the Belgian franc, which was equivalent to the French franc.

Luxembourg used both French and Belgian francs until it issued its own Luxembourgish franc in 1854. Belgium was the first country to introduce coins made of cupronickel in 1860.

In 1865, Belgium, France, Switzerland and Italy created the Latin Monetary Union (to be joined by Greece in 1868): each would possess a national currency unit (franc, lira, drachma) worth 4.5 g of silver or 290.322 mg of fine gold, all freely exchangeable at a rate of 1:1. In the 1870s the gold value was made the fixed standard, a situation which was to continue until 1914.^{[failed verification]}

In 1926, Belgium, as well as France, experienced depreciation and an abrupt collapse of confidence, leading to the introduction of a new gold currency for international transactions, the Belga worth 5 francs, and the country's withdrawal from the monetary union, which ceased to exist at the end of the year. The Belga was tied to sterling at a rate of 35 belgas (175 francs) = £1 stg and was thus put on a gold standard of 1 Belga = 209.211 mg fine gold. The 1921 monetary union of Belgium and Luxembourg survived, however, forming the basis for full economic union in 1932. In 1935, the Belgian franc was devalued by 28% to 150.632 mg fine gold per Belga and the link between the Luxembourg and Belgian francs was revised to 1 Luxembourg franc = 1.25 Belgian francs.

Following Belgium's occupation by Germany in May 1940, the franc was fixed at a value of 10 Reichspfennige, reduced to 8 Reichspfennige in July 1940. Following liberation in 1944, the franc entered into the Bretton Woods system, with an initial exchange rate of 43.77 francs = US dollar set on 5 October. This was changed to 43.8275 in 1946 and then to 50 following the devaluation of sterling in September 1949. The Belgian franc was devalued again in 1982.

Like 10 other European currencies, the Belgian/Luxembourgish franc ceased to exist on 1 January 1999, when it became fixed at 1 EUR= 40.3399 BEF/LUF, thus a franc was worth €0.024789. Old franc coins and notes lost their legal tender status on 28 February 2002.