| # | Company | Employees |
|---|---|---|
| 1 |
Comunidad de Madridcomunidad.madrid
provides information and guidelines for public service communication, citizen participation, and respectful interaction on social media platforms |
24,795 |
| 2 |
Ministerio de Defensa Españoldefensa.gob.es
A Spanish defense ministry responsible for national security, military operations, and defense policy within the country |
9,806 |
| 3 |
Ayuntamiento de Madridmadrid.es
Local government managing Madrid's public services, cultural heritage, economic development, employment opportunities, and tourism for over three million residents. |
5,743 |
| 4 |
Ministerio de la Presidencia, Justicia y Relaciones con las Cortesmpr.gob.es
The company is responsible for developing and implementing Spain's legal policies, ensuring fundamental rights, coordinating with regions, and providing state legal assistance |
5,209 |
| 5 |
Armadaarmada.defensa.gob.es
A company with 25,000 professionals focused on safeguarding Spanish interests at sea, with over 500 years of prestigious history |
3,983 |
| 6 |
Instituto Cervantescervantes.org
Promoting Spanish language and cultures, offering language courses, teacher training, DELE exams, and cultural events in collaboration with other organizations |
3,250 |
| 7 |
Instituto Nacional de Estadística (INE)ine.es
The organization performs large-scale statistical operations and oversees national statistical activities in coordination with international organizations and government entities |
3,019 |
| 8 |
Ministerio de Sanidadsanidad.gob.es
Government health department in Spain responsible for overseeing public health policies, healthcare regulations, and disease prevention initiatives at a national level |
2,759 |
| 9 |
Agencia Estatal de la Administración Tributariagob.es
The company is a website that provides tax agency services, facilitating individuals and businesses with tax-related information and transactions |
2,437 |
| 10 |
Ministerio de Culturacultura.gob.es
National government department responsible for designing and implementing cultural policies, promoting cooperation with other Spanish public administrations, and managing cultural relations abroad |
1,901 |
| 11 |
Ministerio de Haciendahacienda.gob.es
Responsible for proposing and executing government policies on public finances, budgets, public entities, local financing, public administration, civil service, and public governance |
1,887 |
| 12 |
Ministerio de Agricultura, Pesca y Alimentaciónmapa.gob.es
The Ministry is responsible for proposing and executing government policy on rural development, agricultural resources, livestock, fisheries, and food |
1,508 |
| 13 |
Ministerio de Asuntos Exteriores, Unión Europea y Cooperacióngob.es
An organization responsible for managing Spain's foreign relations and cooperation with the European Union, promoting diplomatic efforts and international collaboration |
1,409 |
| 14 |
Instituto nacional de administración públicainap.es
The company focuses on selecting officials, training public employees, conducting studies and publications, and fostering international relations, while organizing various educational and cooperation activities |
1,296 |
| 15 |
Ministerio de Fomentomitmagob.es
The company is responsible for proposing and executing government policies on infrastructure, state-level land, air, and maritime transport, and urban agenda |
1,210 |
| 16 |
Ministerio de Inclusión, Seguridad Social y Migracionesinclusion.gob.es
Government entity in Spain with responsibilities in inclusion, Social Security, and migration policies Implemented projects like Minimum Vital Income |
1,175 |
| 17 |
Ministerio de Transportes y Movilidad Sosteniblegob.es
This company is responsible for proposing and executing government policies on transportation infrastructure and sustainable mobility, as well as urban agenda and housing |
1,013 |
| 18 |
Loterías y Apuestas del Estadoloteriasyapuestas.es
Established in 1763, this company is committed to generating benefits for society through traditional values, human connection, and social engagement |
907 |
| 19 |
Cualtiscualtis.com
A prevention service accredited in four specialties nationwide, offering health, workplace environment, and productivity improvement solutions with various certifications and a digital management platform |
853 |
| 20 |
Registradores de España.registradores.org
The company's mission is to facilitate tasks for Registradores, ensuring high-tech and informative maintenance of entrusted records for interested parties |
845 |
| 21 |
Ministry of Economy, Trade and Businessmineco.gob.es
Government department focused on regulating and promoting economic activities, trade relations, and business operations within the country |
813 |
| 22 |
Ministerio para la Transición Ecológica y el Reto Demográficomiteco.gob.es
The company is responsible for overseeing Spain's ecological transition and addressing demographic challenges at the governmental level |
805 |
| 23 |
AGENCIA ESPAÑOLA DE COOPERACION INTERNACIONAL PARA EL DESARROLLO - AECIDaecid.es
A public entity under the Spanish Ministry of Foreign Affairs that promotes international cooperation and development through the SECIPI |
768 |
| 24 |
INTA (no oficial)
This page is inactive For the latest updates visit INTA's LinkedIn profile: https://wwwlinkedincom/in/inta/ |
715 |
| 25 |
Agencia para el Empleo de Madridmadrid.es
A municipal service offering job orientation, mediation, and training for unemployed individuals, with personalized advice for self-employment, and recruitment services for companies |
682 |
| 26 |
Congreso de los Diputadoscongreso.es
A legislative body in Spain representing the Spanish people, responsible for legislative power, budget approval, government oversight, and other constitutional duties |
649 |
| 27 |
Ministry of Science and Innovation of Spainciencia.gob.es
Government department in Spain overseeing universities, research, technological development, innovation, international relations, representation in international organizations and the European Union |
640 |
| 28 |
Instituto Español de Oceanografíaieo.es
A national research center focused on marine sciences, sustainability of fisheries, and marine environment, representing Spain in international forums, with various facilities and fleet |
590 |
| 29 |
Oficina de Empleo ▪️ Comunidad de Madridcomunidad.madrid
The Employment Offices Network in Madrid provides job search and placement services for individuals and specialized support for employers |
566 |
| 30 |
Ministerio para la Transformación Digital y de la Función Pública
Government institution in Spain responsible for digital transformation and civil service functions |
555 |
| 31 |
Agencia Española de Medicamentos y Productos Sanitariosm-sml.mtrbio.com
This organization ensures the quality, safety, and efficacy of medicines and healthcare products, providing accurate information to protect and promote public health |
551 |
| 32 |
AEMET - Agencia Estatal de Meteorologíaaemet.es
The State Meteorological Agency provides meteorological services to meet the needs of society, protection institutions, and fulfills international commitments |
532 |
| 33 |
CNMC (Comisión Nacional de los Mercados y la Competencia)cnmc.es
A public entity promoting market competition and consumer welfare in Spain, created in 2013 by integrating six regulatory bodies |
524 |
| 34 |
Patrimonio Nacionalpatrimonionacional.es
The company is a unique historical-cultural institution with millions of visitors, royal collections, and vast environmental spaces, focused on preserving and sharing Spain's heritage |
507 |
| 35 |
Imsersoimserso.es
An organization in Spain responsible for managing programs and benefits for elderly people and those in situations of dependency |
447 |
| 36 |
Gobierno de Españalamoncloa.gob.es
The Government of Spain oversees the executive power, directs administration, and executes policies in accordance with the constitution and laws |
442 |
| 37 |
CDTI Innovación - Centro para el Desarrollo Tecnológico y la Innovacióncdti.es
Promoting technological innovation and development for Spanish businesses through project funding, international cooperation, technology transfer, and support for tech startups |
416 |
| 38 |
Ministerio de Industria y Turismomintur.gob.es
The company is responsible for proposing and executing government policies in the fields of industry and tourism through its relevant departments |
413 |
| 39 |
Tribunal de Cuentas de Españatcu.es
The organization is the highest supervisory body of the state, overseeing public spending, and holding individuals accountable for financial responsibilities |
308 |
| 40 | 264 | |
| 41 |
IDAE. Instituto para la Diversificación y Ahorro de la Energíaidae.es
Dedicated to promoting energy efficiency, renewable energy, and low-carbon technologies through training, advising, funding innovation projects, and international collaboration |
202 |
| 42 |
Agencia Estatal de Administración Tributaria
A government administration company in Madrid, Spain, specializing in tax administration and enforcement |
186 |
| 43 | 180 | |
| 44 |
IEF. Instituto de Estudios Fiscalesief.es
Autonomous body under the Ministry of Finance in Spain, dedicated to fiscal studies and research Official LinkedIn page |
178 |
| 45 |
Instituto Nacional de las Artes Escénicas y de la Música (INAEM)cultura.gob.es
The company promotes and distributes music, dance, theater, and circus in Spain, with various artistic creation centers and exhibition spaces under its jurisdiction |
173 |
| 46 |
Agencia Estatal de Administración Digitaladministracionelectronica.gob.es
An organization within the Ministry focusing on promoting the use of ICT within the Spanish Government to drive digital transformation |
152 |
| 47 |
Filmoteca Españolagob.es
Preserving, researching, and promoting Spanish cinematic heritage through film conservation, museum collection, personal archives, specialized book library, and film screenings |
55 |
| 48 |
Compliancecompliance-spain.es
Compliance Spain is a national and international consultancy based in Murcia, offering effective and high-quality compliance, AML/CFT, data protection, and e-commerce services |
10 |
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 9, 2026.
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