2020–21 Championnat National 3
The 2020–21 Championnat National 3 is the fourth season of the fifth tier in the French football league system in its current format. The competition is contested by 168 clubs split geographically across 12 groups of 14 teams. The teams include amateur clubs and the reserve teams of professional clubs.
Teams
On 17 July 2020, the French Football Federation ratified the constitution of the competition, and published the groups as follows:- 120 teams that were not relegated or promoted from the 2019–20 Championnat National 3 groups.
- 11 teams relegated from 2019–20 Championnat National 2 after any reprieves.
- 1 team reprieved from relegation from 2019–20 Championnat National 3 groups.
- 36 teams promoted from Régional 1 leagues.
| Region | Team | Method of qualification |
| Nouvelle-Aquitaine | Neuville | R1A champions |
| Nouvelle-Aquitaine | Libourne | R1B champions |
| Nouvelle-Aquitaine | Tartas | R1C champions |
| Pays de la Loire | Poiré-sur-Vie | R1A champions |
| Pays de la Loire | Sautron | R1A runners up |
| Pays de la Loire | Saint-Philbert-de-Grand-Lieu | R2A champions |
| Centre-Val de Loire | Déols | R1 runners up |
| Centre-Val de Loire | Amilly | R1 third |
| Centre-Val de Loire | Saint-Jean-le-Blanc | R1 fourth |
| Méditerranée-Corsica | Corte | R1 Corsica champions |
| Méditerranée-Corsica | Cannet-Rocheville | R1 Méditerranée champions |
| Méditerranée-Corsica | Rousset | R1 Méditerranée runners up |
| Bourgogne-Franche-Comté | Saint-Apollinaire | R1A champions |
| Bourgogne-Franche-Comté | Grandvillars | R1B runners up |
| Bourgogne-Franche-Comté | Paron | R1A runners up |
| Grand Est | Épernay | R1A champions |
| Grand Est | Nancy | R1B champions |
| Grand Est | Colmar | R1C champions |
| Occitanie | Castanet | R1A runners up |
| Occitanie | Narbonne | R1B champions |
| Occitanie | Alberes Argelès | R1C champions |
| Hauts-de-France | Wasquehal | R1A champions |
| Hauts-de-France | Chantilly | R1B champions |
| Hauts-de-France | Saint-Omer | R1B runners up |
| Normandy | Bayeux | R1A runners up |
| Normandy | Romilly | R1B runners up |
| Normandy | Dives-Cabourg | R1A third |
| Brittany | Milizac | R1A champions |
| Brittany | Guipry Messac | R1B champions |
| Brittany | Saint-Brieuc | R1B runners up |
| Paris Île-de-France | Meaux Academy | R1A champions |
| Paris Île-de-France | Linas-Monthéry | R1B champions |
| Paris Île-de-France | Brétigny | R1B runners up |
| Auvergne-Rhône-Alpes | Moulins | R1A champions |
| Auvergne-Rhône-Alpes | Thonon | R1B champions |
| Auvergne-Rhône-Alpes | Velay | R1A runners up |
On 27 July 2020, the Appeals committee of the DNCG confirmed that Athlético Marseille would be allowed to play in Championnat National 2, thus temporarily leaving a vacant place in Group D. Three days later, the disciplinary committee of the FFF announced that they were demoting the club back to National 3, due to the production of fraudulent documentation at the end of the 2018–19 season.
Promotion and relegation
If eligible, the top team in each group is promoted to Championnat National 2. If a team finishing top of the group is ineligible, or declines promotion, the next eligible team in that group is promoted.Generally, three teams are relegated from each group to their respective top regional league, subject to reprieves. Extra teams are relegated from a group if more than one team is relegated to that group from Championnat National 2. In the case that no teams are relegated to a group from Championnat National 2, one less team is relegated from that group to the regional league.
Reserve teams whose training centres are categorised as category 2B or lower cannot be promoted to Championnat National 2 by the rules of the competition.