| Country: | France |
| Previous Election: | 1999 |
| Next Election: | 2009 |
| Seats For Election: | All 74 French seats in the European Parliament |
| Turnout: | 42.76 |
| Election Date: | 13 June 2004 |
| Party1: | Socialist Party (France) |
| Leader1: | François Hollande |
| Last Election1: | 18 |
| Seats1: | 31 |
| Percentage1: | 28.90 |
| Party2: | Union for a Popular Movement |
| Leader2: | Jean-Pierre Raffarin |
| Last Election2: | 12 |
| Seats2: | 17 |
| Percentage2: | 16.64 |
| Party3: | Union for French Democracy |
| Leader3: | François Bayrou |
| Last Election3: | 9 |
| Seats3: | 11 |
| Percentage3: | 9.81 |
| Party4: | FN |
| Leader4: | Jean-Marie Le Pen |
| Last Election4: | 5 |
| Seats4: | 9 |
| Percentage4: | 9.72 |
| Party5: | The Greens (France) |
| Last Election5: | 9 |
| Seats5: | 6 |
| Percentage5: | 7.41 |
| Party6: | Movement for France |
| Leader6: | Philippe de Villiers |
| Last Election6: | 6 |
| Seats6: | 3 |
| Percentage6: | 6.67 |
| Party7: | PCF–AOM |
| Leader7: | Marie-George Buffet |
| Last Election7: | 6 |
| Seats7: | 3 |
| Percentage7: | 5.88 |
European Parliament elections were held in France on 13 June 2004. The opposition Socialist Party made substantial gains, although this was mainly at the expense of minor parties. The governing Union for a Popular Movement and Union for French Democracy also made gains.
The elections were conducted in seven regional constituencies in metropolitan France, plus an eighth consisting of all overseas departments and territories. Allocation of seats was by proportional representation, with closed lists and no preferential voting, using the rule of the highest average, with a threshold of 5% of the votes in each.
| Constituency | Departements | Seats | |
|---|---|---|---|
| Nord-Ouest | 12 | ||
| Ouest | 10 | ||
| Est | 10 | ||
| Sud-Ouest | 10 | ||
| Sud-Est | 13 | ||
| Massif-Central – Centre | 6 | ||
| Île-de-France | 14 | ||
| Outre-Mer (not shown) | 3 |