| Competition: | Ligue 1 |
| Season: | 2005–06 |
| Dates: | 29 July 2005 – 13 May 2006 |
| Winners: | Lyon (5th Title) |
| Relegated: | Ajaccio Strasbourg Metz |
| Continentalcup1: | Champions League |
| Continentalcup1 Qualifiers: | Lyon Bordeaux Lille |
| Continentalcup2: | UEFA Cup |
| Continentalcup2 Qualifiers: | Marseille Paris Saint-Germain Nancy |
| League Topscorer: | Pauleta (21 goals) |
| Matches: | 380 |
| Total Goals: | 811 |
| Prevseason: | 2004–05 |
| Nextseason: | 2006–07 |
Olympique Lyonnais won Ligue 1 season 2005–06 of the French Association Football League with 84 points.
| Team | Manager | Kit manufacturer | Shirt sponsors (front) | Shirt sponsors (back) | Shirt sponsors (sleeve) | Shorts sponsors | |
|---|---|---|---|---|---|---|---|
| Ajaccio |  José Pasqualetti | Legea | Géant Casino, Collectivité Territoriale de Corse/Conseil Général de la Corse du Sud | Conseil Général de la Corse du Sud | Collectivité Territoriale de Corse | None | |
| Auxerre | Jacques Santini | Uhlsport | PlayStation, PlayStation Portable | None | None | None | |
| Bordeaux |  Ricardo Gomes | Puma | Motorola/Motorola SLVR L7 | Cdiscount | EUROP-LOT | Cdiscount | |
| Le Mans | Frédéric Hantz | Kappa | Le Gaulois (H)/Fermiers de Loué (A), NTN | muc72.fr/NTN | None | Quick | |
| Lens | Francis Gillot | Nike | Orange | Orange | None | None | |
| Lille | | Airness | Partouche Casino | Partouche Casino | None | None | |
| Lyon | Gérard Houllier | Umbro | Renault Trucks (H)/LG Mobile (A), Apicil, Renault Trucks | Renault Trucks | Fertiligène | ISS | |
| Marseille | | Adidas | Neuf | VK Mobile | Internity | Quick | |
| Metz | Joël Müller | Kappa | Arcelor (H)/Sollac (A), Moselle | None | Cora | BigBen Interactive | |
| Monaco |  Francesco Guidolin | Puma | Fedcom, HSBC | Superfund | HSBC | None | |
| Nancy |  | Baliston | Odalys Vacances, Geodis Calberson, Vittel, Grand Nancy | None | Regina | TUI | |
| Nantes | Serge Le Dizet | Airness | Synergie Interim | Synergie Interim | None | None | |
| Nice | | Puma | Rica Lewis (H)/Gorenje (A), RMC | Gorenje (H)/Rica Lewis (A) | Pizzorno Environnement | Pizzorno Environnement | |
| Paris Saint-Germain | Guy Lacombe | Nike | Thomson | None | PSG.fr | None | |
| Rennes |  László Bölöni | Airness | Airness, Samsic Propreté, rennes.fr | Fiat Utilitaires | Association ELA | staderennais.com | |
| Saint-Étienne | Élie Baup | Adidas | Konica Minolta, Conseil général de la Loire en Rhône-Alpes | Vocalcom | None | Loire | |
| Sochaux | Dominique Bijotat | Lotto | Esso, Franche-Comté | Loxam | Megnin Bernard | Adia Job Store | |
| Strasbourg | Jacky Duguépéroux | Adidas | Steelcase (H)/Afflelou (A and in UEFA matches), Strasbourg | Afflelou (H) | None | None | |
| Toulouse | Erick Mombaerts | Lotto | Nicopatch, Monné-Decroix, Eaux d'Alet | Creditec | None | ISS | |
| Troyes | Jean-Marc Furlan | Baliston | Baguépi (H)/Groupe Nasuba (A), Samro, CLCT Studio | Groupe Nasuba (H)/Baguépi (A) | None | LCR |
| Month | Player | |
|---|---|---|
| August | Jérôme Leroy (Lens) | |
| September | Grégory Coupet (Lyon) | |
| October | Franck Ribéry (Marseille) | |
| November | Franck Ribéry (Marseille) | |
| December |  Mamadou Niang (Marseille) | |
| January |  Daisuke Matsui (Le Mans) | |
| February |  John Utaka (Rennes) | |
| March | Yoann Gourcuff (Rennes) | |
| April | Franck Ribéry (Marseille) |
