Xerez Deportivo FC
UCAM Murcia CF
CA Antoniano
Aguilas
Yeclano
CD Estepona
CD San Roque de Lepe
Velez CF
Deportiva Minera
Linares Deportivo
Villanovense
Rec de Huelva
Sevilla Atletico
Don Benito
Recreativo Granada
Almeria B
RB Linense
Juventud Torremolinos CF
Antequera
Xerez CD
FC Cartagena B
Racing Cartagena Mar Menor
Betis Deportivo
Orihuela
Las Palmas B
Mensajero
CD El Palo
CD Coria
Melilla
CD Extremadura
CD El Ejido
Cordoba
UD Tamaraceite
CD Manchego CR
Merida
Puente Genil
Real Jaen
CD Utrera
Atletico Mancha Real
San Fernando CD
Marbella FC
CF Lorca Deportiva
UD Montijo
Cacereno
Atletico Sanluqueno
UD San Fernando
Panaderia Pulido
Atletico Malagueno
AD Ceuta FC
Linense
Segunda Federación, previously called Segunda RFEF, also officially known as Segunda B, is the fourth tier of the Spanish football league system containing 90 teams divided into five groups. It is administered by the Royal Spanish Football Federation. It is the second tier outside the top two professional leagues, the Primera División (also known as La Liga) and Segunda División (also known as La Liga 2), being behind Primera Federación and above Tercera Federación. The division also includes the reserve teams of a number of La Liga and La Liga 2 teams.
On 6 May 2020, the RFEF announced the creation of a new, two-group, 40-team third division called Primera División RFEF, which resulted in the former third division, Segunda División B, dropping down a level and becoming Segunda División RFEF; the changes were made effective for the 2021–22 campaign.
In July 2022, the division was renamed Segunda Federación.