Conglomerate companies of Spain

, S.A. () is a Spanish multinational telecommunications company. It has headquarters as well as a registered office in Madrid, Spain. It is one of the largest telephone operators and mobile network providers in the world. It provides fixed and mobile telephony, broadband, and subscription television, operating in Europe and the Americas.

bank company based in Cantabria, Spain

Acciona, S.A. () is a Spanish multinational conglomerate dedicated to the development and management of infrastructure (construction, water, industrial and services) and renewable energy. The company, via subsidiary Acciona Energía, produces 21 terawatt-hours of renewable electricity a year.

company

Ferrovial S.E. (), previously Grupo Ferrovial, is a Spanish multinational company that operates in the infrastructure sector for transportation and mobility with four divisions: Highways, Airports, Construction, and Mobility and Energy Infrastructure. The Highway sector develops, finances, and operates tolls on highways such as the 407 ETR, the North Tarrant Express, the LBJ Express, Euroscut Azores, I-66, I-77, NTE35W, and Ausol I. The Construction business designs and builds public and private works such as roads, highways, airports, and buildings. The Mobility and Energy Infrastructure Depa

Abertis Infraestructuras, S.A. () is a Spanish worldwide corporation engaged in toll road management. The company is headquartered in Madrid. The company runs over 8,600 kilometres of toll roads in the world. In October 2018, it was acquired by Italian corporation Mundys and Spanish firm ACS Group and the German company Hochtief.

Promotora de Informaciones, S.A. (PRISA) is a Spanish media conglomerate headquartered in Madrid, Spain. It is one of the largest media companies in Spain and in Latin America, producing a wide variety of educational, cultural and informative content. PRISA owns a portfolio of newspapers, magazines, radio stations, and television networks. The majority subsidiaries and brands of the company are El País, Los 40, and Santillana.

Altadis is a Spanish-French multinational purveyor and manufacturer of cigarettes, tobacco and cigars. It was formed via a 1999 merger between Tabacalera, the former Spanish tobacco monopoly and , the former French tobacco monopoly. Through its international holdings, including ownership of the former Consolidated Cigar Holdings and half ownership of the Cuban state tobacco monopoly, Habanos S.A., Altadis was the largest producer of mass market and premium cigars in the world, as well as the fourth largest producer of tobacco products.

Abengoa, S.A. was a Spanish multinational company in the green infrastructure, energy and water sectors. The company was founded in 1941 by Javier Benjumea Puigcerver and José Manuel Abaurre Fernández-Pasalagua, and was based in Seville, Spain. Its current chairman is Gonzalo Urquijo Fernández de Araoz. After repeated bankruptcies and rescues, it declared insolvency in February 2021 amid various regulatory and financial charges against the board and management, the second-largest corporate collapse in Spanish history.

Spanish media group based in Madrid

SENER is a private engineering and technology group founded in 1956. Specializing in activities related to Engineering and Construction, it has industrial holdings in companies working in the areas of energy, environment, and aeronautics.

Spanish communication company

Spanish media company