| 1 | Repsol | €61.8B | 23,810 | 56 |
| 2 | INTERNATIONAL CONSOLIDATED AIRLINES GROUP, S.A. | €32.1B | 71,000 | 55 |
| 3 | Iberia | €4.3B | -- | 56 |
| 4 | restaurantes mcdonald's s.a. | €4.0B | 20,000 | 80 |
| 5 | oficina digital del ayuntamiento de madrid | €2.0B | 20,000 | 80 |
| 6 | high tech industry | €2.0B | 20,000 | 80 |
| 7 | junkers | €1.5B | 20,000 | 80 |
| 8 | plukon food group deutschland | €1.2B | 3,000 | 80 |
| 9 | grupo lactalis iberia | €596.7M | 3,000 | 70 |
| 10 | boromir ind s.r.l. | €596.7M | 3,000 | 70 |
| 11 | e-ache | €594.1M | 3,000 | 70 |
| 12 | eptisa internacional - not official site | €594.1M | 3,000 | 70 |
| 13 | La Caixa | €530.0M | -- | 56 |
| 14 | 1&1 internet españa | €528.8M | 7,500 | 70 |
| 15 | arvato iberia: empleo | €528.8M | 7,500 | 70 |
| 16 | hanger clinic | €500.7M | 3,000 | 70 |
| 17 | christian-albrechts-universität kiel | €490.7M | 3,000 | 70 |
| 18 | colas ile de france normandie | €453.1M | 3,000 | 70 |
| 19 | GenGroup Corp. | €444.6M | 350 | 70 |
| 20 | eqa españa | €444.6M | 350 | 70 |
| 21 | estacionamientos y servicios s.a.u. | €384.8M | 3,000 | 70 |
| 22 | Desigual La Gavia | €360.0M | 2,700 | 56 |
| 23 | esi international españa | €343.3M | 3,000 | 70 |
| 24 | Simon | €338.0M | 4,000 | 56 |
| 25 | BOLSAS Y MERCADOS ESPAÑOLES, SOCIEDAD HOLDING DE MERCADOS Y SISTEMAS FINANCIEROS, S.A. | €312.0M | 1,033 | 55 |
| 26 | n.j.p (naqsh, e, jahan-pars) consulting engineers, (a private limited company.) | €307.0M | 3,000 | 70 |
| 27 | EOI Business School | €277.5M | 2,425 | 70 |
| 28 | eqa | €268.2M | 350 | 70 |
| 29 | caisse primaire d assurance maladie | €268.2M | 350 | 70 |
| 30 | northern health and social care trust | €251.2M | 20,000 | 70 |
| 31 | CLUB ATLETICO DE MADRID SAD | €218.9M | 531 | 55 |
| 32 | altran españa | €211.5M | 3,000 | 70 |
| 33 | grupo gesfor | €211.5M | 3,000 | 70 |
| 34 | intrum justitia españa | €179.7M | 3,000 | 70 |
| 35 | Cluster Marítimo Español | €171.1M | 125 | 70 |
| 36 | saurer components gmbh | €169.2M | 750 | 70 |
| 37 | alliance risk & protection | €154.7M | 3,000 | 70 |
| 38 | 2020 GLOBAL PETS SL | €144.1M | 350 | 70 |
| 39 | FESTA MODA SL | €142.8M | 350 | 70 |
| 40 | Eugenio Pereda Saneamientos | €142.8M | 350 | 70 |
| 41 | ASOCIACION ESPAÑOLA CONTRA EL CANCER | €142.5M | 1,182 | 55 |
| 42 | Motortec Madrid, Feria de la Automoción y la Posventa | €125.9M | 350 | 70 |
| 43 | ROBOT INDUSTRIES España | €125.9M | 350 | 70 |
| 44 | ems electro medical systems | €125.2M | 750 | 70 |
| 45 | FUNDACIÓN JIMENEZ DIAZ | €119.5M | 716 | 70 |
| 46 | WPC Young Professionals Spain | €109.7M | 350 | 70 |
| 47 | ASOCIACION ESPAÑA CON ACNUR | €107.3M | 263 | 55 |
| 48 | TRANSITALIA | €106.8M | 350 | 70 |
| 49 | Renault Trucks España | €106.8M | 350 | 70 |
| 50 | FMC Agro España | €101.2M | 350 | 70 |
| 51 | europa mundo vacaciones sl | €99.4M | 350 | 60 |
| 52 | FUNDACION UNICEF COMITE ESPAÑOL | €98.0M | 169 | 55 |
| 53 | Logistics & Automation Spain | €96.0M | 350 | 60 |
| 54 | Ubeeqo | €96.0M | 350 | 60 |
| 55 | Seractus | €95.8M | 125 | 60 |
| 56 | Europavia España | €95.8M | 125 | 60 |
| 57 | AVANZIS GROUP (EN) | €95.8M | 125 | 60 |
| 58 | saudi abha | €95.8M | 125 | 60 |
| 59 | DigiEcoQuarry | €93.2M | 350 | 60 |
| 60 | Soul Fruit International | €86.3M | 350 | 60 |
| 61 | EAT2GO | €86.3M | 350 | 60 |
| 62 | QUINCA KOMBUCHA | €86.3M | 350 | 60 |
| 63 | Grupo VARMA | €86.3M | 350 | 60 |
| 64 | INTERSICOP | €86.3M | 350 | 60 |
| 65 | Clínicas TheTest Salud Sexual Masculina | €85.6M | 350 | 60 |
| 66 | LAYHER, S.A. | €74.0M | 125 | 60 |
| 67 | La Obra Productos y Servicios | €74.0M | 125 | 60 |
| 68 | Balterio Es | €74.0M | 125 | 60 |
| 69 | Finanzas Credito | €73.6M | 350 | 60 |
| 70 | CECA - Asociación de Bancos Minoristas y Cajas de Ahorros | €73.6M | 350 | 60 |
| 71 | Octigon | €73.6M | 350 | 60 |
| 72 | INSTITUTO DE CREDITO OFICIAL | €73.6M | 350 | 60 |
| 73 | Collecta - Diagonal Recobros | €73.6M | 350 | 60 |
| 74 | WWA - World Wide Assistance | €73.6M | 350 | 60 |
| 75 | hispanoamericana de recobros sl | €73.6M | 350 | 60 |
| 76 | KRUK España, S.L.U. | €73.6M | 350 | 60 |
| 77 | VERIFICA | €73.6M | 350 | 60 |
| 78 | Clearwater International España | €73.6M | 350 | 60 |
| 79 | ActivTrades España | €73.6M | 350 | 60 |
| 80 | Getnet Europe | €73.6M | 350 | 60 |
| 81 | WCM ESPAÑA | €73.6M | 350 | 60 |
| 82 | AXUM INVESTMENTS GROUP | €73.6M | 350 | 60 |
| 83 | Elite Way Consulting | €73.6M | 350 | 60 |
| 84 | jabong.com | €69.7M | 750 | 60 |
| 85 | Emperador Distillers (Bodegas Fundador, Casa Pedro Domecq) | €69.6M | 350 | 60 |
| 86 | milestones grill and bar | €69.6M | 350 | 60 |
| 87 | Seminuevos Lexus Madrid | €69.4M | 350 | 60 |
| 88 | Lexus Madrid El Plantío | €69.4M | 350 | 60 |
| 89 | BMW Momentum Motor | €69.4M | 350 | 60 |
| 90 | Ardanuy Ingeniería S.A. | €69.3M | 350 | 60 |
| 91 | Grupo Hemag | €69.3M | 350 | 60 |
| 92 | Container Hispania Lines (CHL) | €69.1M | 350 | 60 |
| 93 | bertelsmann españa | €68.8M | 20,000 | 60 |
| 94 | ceat limited | €66.6M | 350 | 60 |
| 95 | NCAB Group Iberia | €66.5M | 350 | 60 |
| 96 | Teatro Real | €65.0M | 350 | 60 |
| 97 | Ipsos España | €64.6M | 350 | 60 |
| 98 | MeLoo Foods S.L | €63.5M | 125 | 60 |
| 99 | IE Agri-Innovation Club | €63.5M | 125 | 60 |
| 100 | CIBITEC 23 | €60.9M | 350 | 60 |