| Competition: | Belgian First Amateur Division |
| Season: | 2019–20 |
| Winners: | Deinze |
| Promoted: | Deinze, RWD Molenbeek, Seraing, Lierse Kempenzonen |
| Relegated: | Tubize |
| Prevseason: | 2018–19 |
| Nextseason: | 2020–21 |
The 2019–20 Belgian First Amateur Division was the fourth season of the third-tier football league in Belgium. Mid-March all matches were temporarily postponed due to the COVID-19 pandemic in Belgium, only to be canceled permanently two weeks later, with the standing as of March 12th counting as final. As a result, Deinze was crowned champions and promoted to the 2020–21 Belgian First Division B.
| Number of teams | Province or region | Team(s) |
|---|---|---|
| 4 | Dessel, Heist, Lierse Kempenzonen and Rupel Boom | |
| 3 | RFC Liège, Seraing and Visé | |
| 2 | Dender EH and Deinze | |
| Patro Eisden Maasmechelen and Tessenderlo | ||
| La Louvière Centre and Olympic Charleroi Châtelet Farciennes | ||
| 1 | RWDM47 | |
| Tubize | ||
| Sint-Eloois-Winkel |