Alba County Arad County Argeș County Bacău County Bihor County Bistrița-Năsăud County Botoșani County ;Relegation play-off The 12th and 13th-placed teams of the Liga IV faces the 2nd placed teams from the two series of
Liga V Botoșani.
Brașov County Brăila County Bucharest ;Second play-off The second championship play-off was contested between the top three teams from each of the two groups in the first championship play-off. All matches were played at the
Rocar ANEFS Stadium in Bucharest on 25, 28 May and 1 June 2010. ;Group 1 ;Group 2 ;Final The match was played on 4 June 2010 at
Dinamo Stadium in Bucharest.
Spic de Grâu București won Liga IV București and qualify to promotion play-off in Liga III. Buzău County ;Series I ;Series II ;Championship play-off The championship play-off played between the best two ranked teams in each series of the regular season. ;Semi-finals ;Final The championship final was played on 9 June 2010 at
Petrolul Stadium in
Berca.
Recolta Cislău won the Liga IV Buzău County. ABC Stoicescu qualify to promotion play-off in Liga III because was the only team from play-off that have C.I.S. (Sports Identity Certificate) issued by the Ministry of Youth and Sports required to play in Liga III. Caraș-Severin County Călărași County ;East Series ;West Series ;Championship play-off The championship play-off was played between the first two ranked teams in each series of the regular season. ;Semi-finals ;Final The championship final was played on 5 June 2010 at
Ion Comșa Stadium in
Călărași.
Phoenix Ulmu won the Liga IV Călărași County and qualify to promotion play-off in Liga III. Cluj County Constanța County ;East Series ;West Series ;Championship play-off The teams started the play-off with all the records achieved in the regular season against the other qualified teams from series and played only against the teams from the other series. ;Championship play-out The teams started the play-out with all the records achieved in the regular season against the other qualified teams from series and played only against the teams from the other series.
Covasna County Dâmbovița County Dolj County Galați County Giurgiu County ;Championship play-off The championship play-off played between the best four ranked team in the regular season. All matches were played at
Dunărea-Port Stadium on 2 June (semi-finals) and 5 June 2010 (final). ;Semi-finals ;Final
Nova Force Giurgiu won the Liga IV Giurgiu County and qualify to promotion play-off in Liga III. Gorj County Harghita County Hunedoara County Ialomița County Iași County Ilfov County ;Championship play-off Championship play-off played in a single
round-robin tournament between the best four teams of the regular season. The teams started the play-off with the following points: 1st place – 3 points, 2nd place – 2 points, 3rd place – 1 point, 4th place – 0 points.
Maramureș County ;North Series ; South Series ;Championship final The championship final was played on 2 June 2010 at
Viorel Mateianu Stadium in
Baia Mare.
Spicul Mocira won the Liga IV Maramureș County and qualify to promotion play-off in Liga III. Mehedinți County Neamț County Olt County Prahova County Satu Mare County ;Seria A ;Seria B ;Championship final The championship final was played on 5 June 2010 at
Olimpia Stadium in
Satu Mare.
Victoria Carei won the Liga IV Satu Mare County and qualify to promotion play-off in Liga III. Sălaj County ;East Series ;West Series ;Championship play-off ;Championship play-out
Sibiu County Suceava County Teleorman County Timiș County Tulcea County Vaslui County ;Championship play-off The championship play-off was contested between the top two teams in the two series of the regular season. ;Semi-finals ;Final
Dinamo ARI Râșești won the Liga IV Vaslui County and qualify to promotion play-off in Liga III. Vâlcea County Vrancea County ;Seria Nord ;Seria Sud ;Championship play-off ;Quarter-finals ;Semi-finals ;Final
Adjud won the Liga IV Vrancea County and qualify to promotion play-off in Liga III. == See also ==