The 2004 list of Best Workplaces in Spain was produced by the Great Place to Work® Institute España in colaboration with the business school ESADE.
| Rank | Companies |
| 1 | Danone |
| 2 | Lilly |
| 3 | Diageo Canarias |
| 4 | Diageo España |
| 5 | General Electric Plastics |
| 6 | ESTEVE |
| 7 | Computer Associates |
| 8 | Amgen |
| 9 | Merck, Sharp & Dohme de España |
| 10 | Avon Cosmetics |
| | Accenture |
| | Agilent Technologies |
| | American Express de España |
| | Bankinter |
| | Boehringer Ingelheim España |
| | Federal Express Corporation |
| | Kraft Foods España |
| | M Torres |
| | MBNA |
| | Microsoft |
| | Nestlé España (Oficina central) |
| | Novartis |
| | PricewaterhouseCoopers |
| | Sun Microsystems Iberica |
| | TNT Express |
