2020 Tercera División play-offs

[1] Playoffs were played, if possible, in a final four format at neutral venues and depending on the evolution of the pandemic in each region, with spectators or behind closed doors.

In case of a draw in any game there were no penalty shootout or overtime; the best-positioned team in the regular season will qualify.

The final was postponed due to a COVID-19 positive case of a person related to a player of Portugalete.

[11] Semifinals were played at Estadio Romano, Mérida, while the final at Francisco de la Hera, Almendralejo.

[13] The two matches would be played at La Ciudad del Fútbol, in Las Rozas de Madrid, at 22:00 CEST.

However, the whole repechage was suspended just two hours before the match between Lealtad and Alcoyano due to several positive cases at Marino squad.

[14] On 10 August the RFEF granted the promotion of the four teams involved due to the limited availability of dates to play the matches.