| Club: | FC Istres |
| Season: | 2004–05 |
| Chrtitle: | President |
| Chairman: | Bertrand Benoît |
| Mgrtitle: | Head coach |
| Manager: | Xavier Gravelaine |
| Stadium: | Stade des Costières Stade Parsemain |
| League: | Ligue 1 |
| League Result: | 20th (relegated) |
| Cup1: | Coupe de France |
| Cup1 Result: | Round of 64 |
| Cup2: | Coupe de la Ligue |
| Cup2 Result: | Round of 32 |
| League Topscorer: | Moussa N'Diaye (6) |
| Season Topscorer: | Moussa N'Diaye (6) |
| Average Attendance: | 7,207[1] |
| Prevseason: | 2003–04 |
| Nextseason: | 2005–06 |
The 2004–05 season was the 85th season in the existence of FC Istres and the club's first season back in the top flight of French football. In addition to the domestic league, Istres participated in this season's edition of the Coupe de France and the Coupe de la Ligue. The season covered the period from 1 July 2004 to 30 June 2005.[2]
See main article: 2004–05 Ligue 1.
See main article: 2004–05 Coupe de France.
See main article: 2004–05 Coupe de la Ligue.