Suez ( ; ) is a seaport city (population ca. 497,000) in north-eastern Egypt, located on the north coast of the Gulf of Suez (a branch of the Red Sea), near the southern terminus of the Suez Canal, having the same boundaries as Suez governorate. It has three harbors, Adabya, Ain Sukhna and Port Tawfiq, and extensive port facilities. Together they form a metropolitan area. Railway lines and highways connect the city with Cairo, Port Said, and Ismailia. Suez has a petrochemical plant, and its oil refineries have pipelines carrying the finished product to Cairo.

Suez S.A. was a leading French-based multinational corporation headquartered in the 8th arrondissement of Paris, with operations primarily in water, electricity and natural gas supply, and waste management. Suez was result of a 1997 merger between the Compagnie de Suez and , a leading French water company. In the early 2000s Suez also owned some media and telecommunications assets, but has since divested these. According to the Masons Water Yearbook 2004/5, Suez served 117.4 million people around the world. The company conducted a merger of equals with fellow utility company Gaz de France on 22 July 2008 to form GDF Suez. The water and waste assets of Suez were spun off into a separate publicly traded company, Suez Environnement.