Compañía Española de Petróleos, S.A.U., commonly known as Cepsa, is a Spanish multinational oil and gas company headquartered at Torre Cepsa in the Cuatro Torres Business Area in Madrid, Spain. It operates in several European countries as well as in Algeria, Canada, Colombia, Morocco, Brazil, and Panama. The company currently produces around 260,000 barrels per day (41,000 m3/d) and has a refining capacity in three refineries of 21 million tonnes/year.

The Cuatro Torres Business Area (CTBA), also known as the Área de Negocios de las Cuatro Torres, is a business district located in the Paseo de la Castellana in Madrid, Spain, on the former Ciudad Deportiva of Real Madrid. The area contains the four tallest skyscrapers in Spain, and four of the ten tallest in the European Union: the Torre Emperador, Torre de Cristal, Torre PwC and Torre Cepsa. Construction of the buildings finished in 2008.