| Club: | RC Lens |
| Season: | 2008–09 |
| Chrtitle: | President |
| Chairman: | Gervais Martel |
| Mgrtitle: | Head coach |
| Manager: | Jean-Guy Wallemme |
| Stadium: | Stade Bollaert-Delelis |
| League: | Ligue 2 |
| League Result: | 1st (promoted) |
| Cup1: | Coupe de France |
| Cup1 Result: | Seventh round |
| Cup2: | Coupe de la Ligue |
| Cup2 Result: | Quarter-finals |
| League Topscorer: | Toifilou Maoulida (13)[1] |
| Season Topscorer: | Toifilou Maoulida (13) |
| Average Attendance: | 29,842[2] |
| Largest Win: | Lorient 0–3 Lens Lens 3–0 Angers Lens 4–1 Strasbourg |
| Pattern La1: | _redsquares |
| Pattern B1: | _redsquares |
| Pattern Ra1: | _redsquares |
| Leftarm1: | F8F8FF |
| Body1: | FFFFFF |
| Rightarm1: | F8F8FF |
| Shorts1: | FFFFFF |
| Socks1: | 29459B--> |
| Leftarm1: | FFFF00 |
| Body1: | FFFF00 |
| Rightarm1: | FFFF00 |
| Shorts1: | 000000 |
| Socks1: | FF0000 |
| Leftarm2: | FFFFFF |
| Body2: | FFFFFF |
| Rightarm2: | FFFFFF |
| Shorts2: | FFFFFF |
| Socks2: | FFFFFF pattern_la3= |
| Leftarm3: | 000000 |
| Body3: | 000000 |
| Rightarm3: | 000000 |
| Shorts3: | 000000 |
| Socks3: | FFFFFF |
| Prevseason: | 2007–08 |
| Nextseason: | 2009–10 |
The 2008–09 season was RC Lens's 103rd season in existence and the club's first season back in the second division of French football since 1990. In addition to the domestic league, Lens 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 2008 to 30 June 2009.
See main article: 2008–09 Ligue 2.
The league fixtures were announced on 23 May 2008.[3]
See main article: 2008–09 Coupe de France.
See main article: 2008–09 Coupe de la Ligue.