| Rock en Seine | |
|---|---|
 | |
| Dates | Annually, end of August |
| Location(s) | Parc de Saint-Cloud |
| Years active | 2003–present |
| Founders |
|
| Attendance | 40,000 a day since 2013 |
| Website | rockenseine |
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Rock en Seine (French pronunciation: [ʁɔk ɑ̃ sɛn]) is a multiple-day rock music festival, held at Domaine National de Saint-Cloud, the Château de Saint-Cloud's park, west of Paris, inside the garden designed by André Le Nôtre.