| Rank | Company, City of Head Office (Country) | |
| |
| 1 | Iberdrola, S.A. in Madrid (E) | |
| 2 |  Sonae - SOC. Gestora de ParticipaçÕES Sociais, S. A in Maia (P) | |
| 3 | Portugal Telecom SGPS S.A. in Lisboa (P) | |
| 4 | Gas Natural SDG, S.A. in Madrid (E) | |
| 5 | Sacyr Vallehermoso, S.A. in Madrid (E) | |
| 6 |  Acciona S.A. in Alcobendas (E) | |
| 7 |  Banco Comercial Portugues (B.C.P.) in Oporto (P) | |
| 8 |  Alcampo S A in Madrid (E) | |
| 9 |  CIA. de Distribucion Integral Logistica in Madridegane (E) | |
| 10 |  Sociedad General de Aguas de Barcelona SA in Barcelona (E) | |
|
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| 11 | Grupo Santander Portugal in Lisboa (P) | |
| 12 |  Ebro Puleva SA in Madrid (E) | |
| 13 | Hidroelectrica del Cantabrico, S.A. in Oviedo (E) | |
| 14 |  Amadeus Global Travel Distribution, S.A in Madrid (E) | |
| 15 | INYPSA Informes y Proyectos S.A. in Madrid (E) | |
| 16 | Antena 3 Television SA in San Sebastian De Los Reyes (E) | |
| 17 |  Promotora de Informaciones S.A. in Madrid (E) | |
| 18 | Superdiplo, S.A. in Málaga (E) | |
| 19 | Tableros de Fibras SA in Madrid (E) | |
| 20 | Indra Sistemas SA in Madrid (E) | |
| 21 | Mota-Engil Sgps SA in Oporto (P) | |
| 22 | Acerinox, S.A. in Madrid (E) | |
| 23 |  Bayer Hispania, S.L. in Barcelona (E) | |
| 24 |  Campofrio Alimentacion SA in Madrid (E) | |
| 25 | Dragados Industrial SA in San Sebastian de Los Reyes (E) | |
| 26 | Grupo Auxiliar Metalúrgico, S.A. (Gamesa) in Madrid (E) | |
| 27 |  Uralita, S.A. in Madrid (E) | |
| 28 | Red Electrica de Espana, S.A. in Madrid (E) | |
| 29 | Pescanova, S.A. in Pontevedra (E) | |
| 30 | Somague SGPS, SA in Algés (P) | |
| 31 | Teixeira Duarte - Engenharia e Construcoes SA in Lisboa (P) | |
| 32 | Sonae. com SGPS S. A in Senhora da Hora (P) | |
| 33 | Cementos Portland S.A. in Pamplona (E) | |
| 34 | Cortefiel S.A. in Madrid (E) | |
| 35 | SOS Cuetara SA in Madrid (E) | |
| 36 | Torraspapel Holding S.A in Barcelona (E) | |
| 37 | Heineken Espana in Sevilla (E) | |
| 38 | Elecnor, S.A. in Madrid (E) | |
| 39 | Zardoya Otis SA in Madrid (E) | |
| 40 |  Brisa-Auto Estradas de Portugal SA in Lisboa (P) | |
| 41 | Terra Networks Group in Madrid (E) | |
| 42 | Finanzauto SA in Madrid (E) | |
| 43 | Inmobiliaria Urbis S.A. in Madrid (E) | |
| 44 | Aldeasa S.A. in Madrid (E) | |
| 45 | Construcciones Y Auxiliar de Ferrocarriles, S.A. in Beasain (E) | |
| 46 | Global Steel Wire S.A. in Santander (E) | |
| 47 | Autopistas, Concesionaria Espanola, S.A. in Barcelona (E) | |
| 48 | Koipe S.A. in San Sebastian (E) | |
| 49 |  Inmobiliaria Colonial SA in Barcelona (E) | |
| 50 | Asturiana de Zinc S.A. in Asturias (E) | |
| 51 | PT Multimedia - Telecomunicacoes S.G.P.S in Lisboa (P) | |
| 52 | Uniland Cementera SA in Barcelona (E) | |
| 53 | Grupo Empresarial ENCE (Empresa Nacional de Celulosa España) SA in Madrid (E) | |
| 54 | Salvador Caetano IND MET Veic Trans, SA in Vila Nova De Gaia (P) | |
| 55 | Telefonica Publicidad E Information SA in Madrid (E) | |
| 56 | BPI-SGPS Sociedad in Oporto (P) | |
| 57 | Service Point Solutions SA in Barcelona (E) | |
| 58 | Sociedade de Construcoes Soares da Costa SA in Oporto (P) | |
| 59 | Viscofan, S.A. in Pamplona (E) | |
| 60 | Banco Cooperativo Espanol S.A in Madrid (E) | |
| 61 | Cementos Molins SA in Barcelona (E) | |
| 62 | ISS European Cleaning Systems S.A in Sant Cugat del Vall (E) | |
| 63 | Energia E Industrias Aragonesas EIA SA in Madrid (E) | |
| 64 | Grupo Duro-Felguera, S.A. in Oviedo (E) | |
| 65 | Omsa Alimentacion, S.A. in Valencia (E) | |
| 66 |  Aurea Concesiones de Infraestructuras SA in Valencia (E) | |
| 67 | Sociedad Espanola del Acumulador Tudor, S.A. in Madrid (E) | |
| 68 | RBA Holding Editorial S.A in Barcelona (E) | |
| 69 | Efacec Capital SGPS SA in S. Mamede Infesta (P) | |
| 70 |  Tele Pizza, S.A. in Madrid (E) | |
| 71 | Lusomundo - Sociedade Gestora de Participacoes Sociais SA in Lisboa (P) | |
| 72 | Tubacex, S.A. in Llodiolav (E) | |
| 74 | Construtora do Tamega SA in Bucelas (P) | |
| 75 | Impresa SGPS SA in Lisboa (P) | |
| 76 | Mecalux SA in L'Hospitalet (E) | |
| 77 | Mota & Companhia, SA. in Oporto (P) | |
| 78 | Telecel Comunicacoes Pessoais S.A. in Lisboa (P) | |
| 79 | La Seda de Barcelona SA in Barcelona (E) | |
| 80 | Cofina SGPS, SA in Oporto (P) | |
| 81 | Grupo Grifols S A in Sevilla (E) | |
| 82 | Ercros S.A. in Barcelona (E) | |
| 83 | Enaco SA in Torrente (Valencia) (E) | |
| 84 | Avanzit SA in Madrid (E) | |
| 85 | Bodegas Y Bebidas, S.A. in San Sebastian Guipuzcoa (E) | |
| 86 | Amper, S.A. in Madrid (E) | |
| 87 | Babcock Borsig España S.A in Valle de Trápaga (Vizcaya) (E) | |
| 88 | Vidrala SA in Llodio (E) | |
| 89 | Acerias Y Forjas de Azcoitia S.A. in Azkoitia (E) | |
| 90 | Iberpapel Gestion SA in Madrid (E) | |
| 91 | Sogecable S.A. in Madrid (E) | |
| 92 | Miquel y Costas & Miquel, S.A. in Barcelona (E) | |
| 93 | Azkoyen, S.A. in Peralta (E) | |
| 94 | Sumolis CIA. IND. de Frutas E Bebidas SA in Carnaxide (P) | |
| 95 | Ingelectric-Team SA in Zamudio (E) | |
| 96 | Lajo Y Rodriguez S A in Mejorada del Campo (E) | |
| 97 | DOGI SA in Barcelona (E) | |
| 98 | Lacer SA in Barcelona (E) | |
| 99 | Sotogrande SA in San Roque (Cadiz) (E) | |
| 100 | Unipapel SA in Madrid (E) | |
| | |
| | | Minimum annual sales necessary to enter this table: 137 Million Euro |
| |
