Oudenaarde lost the relegation play-offs and were thus also relegated.
Merger
Châtelet merged with Royal Olympic Club de Charleroi-Marchienne to become R. Olympic Charleroi Châtelet Farciennes, known as Olympic Charleroi CF. Strictly speaking, the new club is a continuation of Royal Olympic Club de Charleroi-Marchienne rather than Châtelet, as the latter club has been dissolved.
^ abcdEligible for promotion. The deadline for requesting a license for professional football of mid-February revealed that only six teams (Deinze, La Louvière Centre, Lierse Kempenzonen, Patro Eisden Maasmechelen, RWDM47 and Seraing) had applied.[1] Only four of those actually obtained the license. Due to one club dissolving (Lokeren) and two clubs being refused a license (Roeselare and Virton), two extra teams were promoted, the two highest finishers: Seraing and RWDM47. Eventually on 31 July 2020 it was decided that the Belgian First Division A would expand to 18 teams, meaning no team would relegate from, while two teams would be promoted into this division. As a result, two more spots opened up in the 2020–21 Belgian First Division B, which went to Lierse Kempenzonen (highest finisher with license) and the Club Brugge U23 squad.
^ abAs both Seraing and RFC Liège had played one match less, their points were scaled up by a factor 24/23.
^ abBoth La Louvière Centre and Sint-Eloois Winkel were spared of relegation despite finishing in the relegation positions, due to Lokeren being dissolved and Virton being refused a license for the first Amateur Division.
^Tubize did not meet all the criteria to obtain a license and was penalized with a 3-point penalty for next season (in the Belgian Second Amateur Division).
^Match was stopped at a score of 1–2 due to a regional power outage with 20 minutes remaining. As the home club was not to blame, the match was originally scheduled to be replayed entirely, but in the end got cancelled as well.