Arad County A total of nine teams from the
previous season participated in this short tournament, while
Podgoria Pâncota, CS Beliu, and CS Glogovăț announced that they could not comply with the conditions imposed by the medical protocol. ;Results
Argeș County Voința Budeasa achieved promotion to
Liga III, while nine other teams from the
previous season participated in this short tournament, along with Energia Stolnici, the
Liga V Argeș South Series leader at the moment of the interruption in March 2020. Muscelul Câmpulung was renamed
Inter Câmpulung. ;Group A ;Results ;Group B ;Results ;Championship play-off ;Semi-finals ;Final
Real Bradu won the Liga IV Argeș County and qualified for the promotion play-off to Liga III. Bacău County A total of four teams from the
previous season participated in this short tournament. ;Results ;Championship final
Dinamo Bacău won the Liga IV Bacău and qualified for the promotion play-off to Liga III. Brașov County Corona Brașov achieved promotion to
Liga III, while a total of five other teams from the
previous season participated in this short tournament. ;Results ;Championship play-off ;Results
Buzău County CSM Râmnicu Sărat achieved promotion to
Liga III, while a total of four other teams from the
previous season participated in this short tournament. Gloria Vadu Pașii was renamed CS Vadu Pașii. ;Results ;Championship final The match took place on 8 May 2021 at
Petrolul Stadium in
Berca.
Team Săgeata won the Liga IV Buzău and qualified for the promotion play-off to Liga III. Caraș-Severin County Progresul Ezeriș achieved promotion to
Liga III, while a total of four other teams from the
previous season participated in this short tournament. ;Results ; Championship final The championship final was played on 8 May 2021 at
Voința Stadium in
Lupac.
Voința Lupac won the Liga IV Caraș-Severin and qualified for the promotion play-off to Liga III. Călărași County CSM Oltenița achieved promotion to
Liga III, while six teams from the
previous season, along with two teams from
Liga V Călărași, Rapid Ulmeni and Progresul Perișoru, participated in this short tournament. However, the competition ended after the deadline set by the FRF, and the Călărași County winner did not participate in the
promotion play-off. ;Results
Cluj County Someșul Dej took Voința Budeasa’s
Liga III place, with only four teams participating in this short tournament,
Victoria Cluj from the
previous season, AMEFA Cluj and Academia Florești from
Liga V Cluj, while Viitorul Cluj formed its senior team. ;Results
Constanța County Gloria Albești achieved promotion to
Liga III, while four teams from the
previous season participated in this short tournament. ;Results ;Championship play-off ;Third place match ;Championship final
Ovidiu won the Liga IV Constanța and qualified for the promotion play-off to Liga III. Dolj County Only four teams participated in this short tournament, Dunărea Calafat from the
previous season, alongside Fulgerul Maglavit, Spicul Unirea from
Liga V Dolj, and the newly formed Știința Calafat. ;Results ; Championship play-off ;Third place match ;Championship final
Dunărea Calafat won the Liga IV Dolj and qualified for the promotion play-off to Liga III. Giurgiu County The
Liga IV Giurgiu short tournament featured eight teams divided into two zones of four, with the top two from each group qualifying for the championship play-off, which consisted of semi-finals and a final. However, the competition ended after the deadline set by the Romanian Football Federation, and the Giurgiu County winner did not take part in the
promotion play-off. ;Zone I ; Zone II ; Championship play-off All matches were held at
Dunărea-Port Stadium in
Giurgiu, with the semi-finals on 12 June 2021 and the final on 20 June 2021. ;Semi-finals ;Final
Victoria Adunații-Copăceni won the Liga IV Giurgiu. Hunedoara County The
Liga IV Hunedoara County was played in a single round-robin regular season with ten teams, followed by a Final Four and 5–7 and 8–10 place play-offs, all contested in a single round-robin format, with teams starting with half of their regular season points, rounded up, and no other records carried over.
Team changes from the previous season •
Jiul Petroșani achieved promotion to
Liga III. • Cetate Deva II was renamed
CSM Deva II. ;Final four The teams started the final four play-off with half of the points accumulated in the regular season. ; 5–7 place play-off The teams started the play-off with half of the points accumulated in the regular season. ;8–10 place play-off The teams started the play-off with half of the points accumulated in the regular season.
Ialomița County Only five teams from the
previous season participated in this short tournament, played over two legs (home and away). ;Results
Ilfov County Only four teams participated in this short tournament, three from the
previous season and Voința Crevedia, the
Liga V Ilfov leader at the moment of the interruption in March 2020. ;Results ;Championship final The championship final was played between the leader and the runner-up of the regular season. If the match ended in a draw, the higher-seeded team was declared the winner.
Viitorul Domnești won the Liga IV Ilfov and qualified for the promotion play-off to Liga III. Maramureș County Progresul Șomcuta Mare achieved promotion to
Liga III, while only four teams from the
previous season announced that they could comply with the conditions imposed by the medical protocol. ;Results ;Championship final The match took place on 28 April 2021 at
Municipal Stadium in
Sighetu Marmației.
Sighetu Marmației won the Liga IV Maramureș and qualified for the promotion play-off to Liga III. Mehedinți County Only two teams from the
previous season, Viitorul Șimian and Pandurii Cerneți, along with two from
Liga V Mehedinți, AS Noapteșa and Avântul Bistrița, announced that they could comply with the conditions imposed by the medical protocol. ;Results ;Championship play-off ;Third place match ;Championship final
Viitorul Șimian won the Liga IV Mehedinți and qualified for the promotion play-off to Liga III. Mureș County Unirea Ungheni achieved promotion to
Liga III, while only twelve teams, eight from the
previous season and four new sides, Kinder Sângeorgiu de Mureș, Înfrățirea Valea Izvoarelor, MSE 1898 Târgu Mureș and Viitorul Târnăveni, announced that they could comply with the conditions imposed by the medical protocol. ;Series I ;Results ;Series II ;Results ;Championship play-off ;Semi-finals The semi-final matches were played on 5 May 2021 at neutral venues,
Central Stadium in
Sovata and the Weekend Sports Complex in
Târgu Mureș. ;Final The match took place on 8 May 2021 at
Central Stadium in
Gornești.
Iernut won the Liga IV Mureș County and qualified for the promotion play-off to Liga III. Prahova County CSO Plopeni achieved promotion to
Liga III, while only four teams from the
previous season announced that they could comply with the conditions imposed by the medical protocol. ;Results ;Championship final The championship final was played between the leader and the runner-up of the regular season. If the match ended in a draw, the higher-seeded team was declared the winner.
Petrolul 95 Ploiești won the Liga IV Prahova County and qualified for the promotion play-off to Liga III. Satu Mare County CSM Satu Mare achieved promotion to
Liga III, while only twelve teams from the
previous season announced that they could comply with the conditions imposed by the medical protocol. ;Series A ;Results ;Series B ;Results ;Championship play-off ;Semi-finals The matches were played on 4 May 2021 at neutral venues,
Comunal Stadium in
Dorolț and
Daniel Prodan Stadium in
Satu Mare. ;Final The match was played on 7 May 2021 at
Daniel Prodan Stadium in
Satu Mare.
Victoria Carei won the Liga IV Satu Mare County and qualified for the promotion play-off to Liga III. Sălaj County Sportul Șimleu Silvaniei achieved promotion to
Liga III, while only three teams from the
previous season and one from
Liga V Sălaj, Juniorii Ip, announced that they could comply with the conditions imposed by the medical protocol. ;Results ;Championship final The championship final was played between the leader and the runner-up of the regular season. If the match ended in a draw, the higher-seeded team was declared the winner.
Rapid Jibou won the Liga IV Sălaj County and qualified for the promotion play-off to Liga III. Sibiu County Măgura Cisnădie achieved promotion to
Liga III, while only five teams, one from the
previous season, FC Avrig, and the four new entries, Alma Sibiu,
Inter Sibiu, Interstar Sibiu, and Quantum/Cuantic Arsenal Sibiu, announced that they could comply with the conditions imposed by the medical protocol. ;Results
Suceava County Eight teams from the
previous season announced that they could comply with the conditions imposed by the medical protocol. ; Group A ;Results ;Group B ;Results ;Championship final
Viitorul Liteni won the Liga IV Suceava County and qualified for the promotion play-off to Liga III. Teleorman County Only four teams from the
previous season announced that they could comply with the conditions imposed by the medical protocol. ;Results ;Championship final The championship final was played between the leader and the runner-up of the regular season. If the match ended in a draw, the higher-seeded team was declared the winner.
Rapid Buzescu won the Liga IV Teleorman County and qualified for the promotion play-off to Liga III. Timiș County Avântul Periam achieved promotion to
Liga III, while only seven teams from the
previous season and two promoted sides from
Liga V Timiș, CS Comloșu Mare (Series I winners) and Avântul Topolovățu Mare (Series III winners), participated in this short tournament. ;Results
Vaslui County Sporting Juniorul Vaslui was admitted to
Liga III to fill the vacant places, while only five teams from the
previous season announced that they could comply with the conditions imposed by the medical protocol. ;Results
Vâlcea County Minerul Costești was admitted to
Liga III to fill the vacant places, while only three teams from the
previous season and one from
Liga V Vâlcea, CS Mădulari, announced that they could not comply with the conditions imposed by the medical protocol. ;Results ;Championship final The championship final was played between the leader and the runner-up of the regular season. If the match ended in a draw, the higher-seeded team was declared the winner.
Băbeni won the Liga IV Vâlcea County and qualified for the promotion play-off to Liga III. Vrancea County Only four teams from the
previous season, along with two new teams, Inizio Focșani and Prosport Focșani, announced that they could not comply with the conditions imposed by the medical protocol. However, the competition ended after the deadline set by the FRF, and the Vrancea County winner did not participate in the
promotion play-off. ==See also==