The Brussels Stock Exchange (French: Bourse de Bruxelles, Dutch: Beurs van Brussel), abbreviated to BSE, was founded in Brussels, Belgium, by decree of Napoleon in 1801. On 22 September 2000, the BSE merged with Paris Bourse, Lisbon Stock Exchange and the stock exchanges of Amsterdam, to form Euronext N.V., the first pan-European exchange for equities and derivatives, with common trading and clearing of all products, and was renamed Euronext Brussels. The most well known index on the Brussels Stock Exchange is the BEL20. It now belongs to Euronext group.

The building that housed the Brussels Stock Exchange until 1996 does not have a distinct name, though it is usually called simply the Bourse/Beurs. It is located on Boulevard Anspach, and is the namesake of the Place de la Bourse/Beursplein, which is, after the Grand Place, the second most important square in Brussels.