2023–24 Danish 3rd Division

The 2023–24 Danish 3rd Division is the 3rd season of the Danish 3rd Division since its establishment in 2021 as the new tier 4 in the Danish football league system. The season will start with a group of twelve teams. After 22 rounds the group will be split in a promotion group and a relegation group. The top two teams of the promotion group will be promoted to the 2024–25 Danish 2nd Division. The bottom three teams of the relegation group will be relegated to the 2024–25 Denmark series.

Participants
Frem finished the 2022–23 Danish 2nd Division in 11th place and were relegated to 3rd division. They replaced Middelfart G&BK and FA 2000 who were promoted to the 2023–24 Danish 2nd Division.

Holbæk B&I, Vejgaard BK and Avarta were promoted from the 2022–23 Denmark Series. They replaced AB Tårnby and Dalum IF who were relegated to 2023–24 Denmark Series.

The unequal distribution of promoted and relegated teams was caused by the bankruptcy of Jammerbugt FC in August 2022, which led to the club being expelled from the 2022–23 Danish 2nd Division and relegated to tier 6.

Promotion Group
The top 6 teams will compete for 2 spots in the 2024–25 Danish 2nd Division. Points and goals carried over in full from the regular season.

Relegation Group
The bottom 6 teams will compete to avoid the initial 3 relegations spots to the 2024–25 Denmark Series. Points and goals carried over in full from the regular season.