Euronext N.V. (short for European New Exchange Technology) is a European bourse that provides trading and post-trade services for a range of financial instruments. It is registered in Amsterdam but its operational headquarters are located in Paris. It operates major stock exchanges in seven countries: France (Euronext Paris), the Netherlands (Euronext Amsterdam), Belgium (Euronext Brussels), Ireland (Euronext Dublin), Portugal (Euronext Lisbon), Italy (Borsa Italiana) and Norway (Euronext Oslo Børs). The present-day Euronext was spun off from the Intercontinental Exchange (ICE) in 2014, shortly after ICE's acquisition of NYSE Euronext the year before.

Traded assets include regulated equities, exchange-traded funds (ETF), warrants and certificates, bonds, derivatives, commodities, foreign exchange as well as indices. As of March 2025, Euronext operated nearly 1,800 listed issuers with a market capitalization of approximately €6.3 trillion.

Euronext is the largest center for debt and funds listings in the world, and provides technology and managed services to third parties. In addition to its main regulated market, it operates Euronext Growth and Euronext Access, providing access to listing for small and medium-sized enterprises. Euronext Paris accounts for more than 80% of Euronext’s total market cap. It also plays a key role in commodities trading, offering markets for power through Nord Pool and for fish through Fish Pool, alongside other agricultural commodities such as milling wheat and rapeseed.

Post-trade services include clearing performed by Euronext's multi-asset clearing house, Euronext Clearing, headquartered in Rome, as well as custody and settlement performed by Euronext's central securities depository (CSD), Euronext Securities.

Euronext traces its origins back to some of the world's oldest bourses, formed in the Low Countries' shifting trade centres, Bruges, Antwerp and Amsterdam in 1285, 1485 and 1602, respectively, as well as to the foundation of the Paris Bourse in 1724. In its present form, Euronext was established in September 2000 through the merger of the bourses in Amsterdam, Brussels and Paris. The goal was to create a single, integrated, and liquid market for securities trading across Europe. Since its inception, Euronext has continued to expand, and now operates stock exchanges in several European countries, including France, the Netherlands, Belgium, Portugal, Ireland, and Norway. Its creation was followed by the introduction of the single currency and harmonisation of financial markets.

In August 2023, the company formed EuroCTP as a joint venture with 13 other bourses, in an effort to provide a consolidated tape for the European Union, as part of the Capital Markets Union proposed by the European Commission.

In 1998, the London Stock Exchange and Deutsche Börse announced their intention of forming an alliance to fend off competition from the United States, and take advantage from the European Union's (EU) single currency and harmonisation of financial markets. In April 1999 the stock exchanges in Paris, Zurich, Madrid, Brussels, Amsterdam, and Milan signed a memorandum of understanding in Madrid, which formalised plans to include these bourses as well.

Ultimately, only three decided to proceed, and on 22 September 2000 Euronext was formed following a merger of the Amsterdam Stock Exchange, Brussels Stock Exchange, and Paris Bourse.