The 2022–23 Segunda Federación season is the second season for the Segunda Federación, the fourth-highest level in the Spanish football league system.
Ninety teams participate, divided into five groups of eighteen clubs each based on geographical proximity.
In each group, the champions are automatically promoted to Primera Federación, and the second to fifth placers are qualified to the promotion play-offs.
The last five teams in each group are relegated to the Tercera Federación; in addition, the four worst teams classified 13th in their group play in the relegation play-offs, to define the last two relegation places.
A total of 90 teams joined the league: ten relegated from the 2021–22 Primera División RFEF, 53 retained from the 2021–22 Segunda División RFEF and 27 promoted from the 2021–22 Tercera División RFEF.