The 2021–22 Primera División RFEF season was the first and the only season under the name Primera División RFEF, the new third highest level in the Spanish football league system. It succeeded the old Segunda División B, which renamed itself Segunda División RFEF and downgraded to the fourth level in the pyramid.[1] Forty teams participated, divided into two groups of twenty clubs each based on geographical proximity. In each group, the champions automatically promoted to Segunda División and the second to fifth placers played promotion play-offs and the bottom five were relegated to the Segunda División RFEF.[2][3]
^Deportivo La Coruña awarded a 3–0 win over Extremadura after the latter refused to take the pitch in their Round 12 match. Extremadura was subsequently deducted 3 points.
^Racing Ferrol awarded a 3–0 win over Extremadura after failing show up in Round 25 match.
^ abRayo Majadahonda is ahead of UD Logroñés on head-to-head points: Rayo Majadahonda–UD Logroñés 1–0, UD Logroñés–Rayo Majadahonda 0–1
^ abCelta Vigo B is ahead of Unionistas on head-to-head points: Celta Vigo B 4, Unionistas 1
^ abInternacional awarded a 3–0 win over Unionistas due to illegal alignment in their Round 10 match. Match originally ended 0–0.
^Talavera de la Reina readmitted into the 2022–23 Primera Federación after the RFEF excluded Internacional from the competition.
^Extremadura was expelled from the competition after two no-shows in the competition. All subsequent matches will be awarded 0–2 for their rivals.
Source: SoccerWay Legend: Blue = home team win; Yellow = draw; Red = away team win.
Final
The winners of the two regular season groups will face off in a single-match neutral site final to determine the champion of the 2021–22 Primera División RFEF season. The match will take place at one of the stadiums designated to host the promotion playoff.
Teams ranked second through fifth in each of the two groups qualified for the promotion playoff, which determined the last two promotion spots. The eight qualified teams were drawn into two fixed brackets, each containing four teams. All ties consisted of a single neutral-site match. In case of draws, extra time was played; if the match was still level, the team which achieved a higher regular season finish was proclaimed the winner.