The 2022–23 Tercera Federación season was the second for Tercera Federación, the national fifth level in the Spanish football league system.
It consisted of 18 groups with 16 teams each.
[1] A total of 288 teams made up the league: 27 relegated from the 2021–22 Segunda División RFEF, 203 retained from the 2021–22 Tercera División RFEF, and 58 promoted from the regional divisions.
[2]
In addition to the 18 best-placed non-reserve teams qualifying for the 2023–24 Copa del Rey, the seven best non-reserve runners-up of the 18 groups that have not already qualified will also participate.