The 2017–18 Liga IV was the 76th season of Liga IV and the 50th since the 1968 administrative and territorial reorganization of the country, representing the fourth tier of the Romanian football league system. The champions of each county association played against one from a neighbouring county in a play-off for promotion to Liga III.
From this season the counties were divided into 7 regions, each consisting of 6 counties and the draw was made on 28 February 2018, with three months and a half before the first matches.
County leagues
North–East Bacău (BC) Botoșani (BT) Iași (IS) Neamț (NT) Suceava (SV) Vaslui (VS)
North–West Bihor (BH) Bistrița-Năsăud (BN) Cluj (CJ) Maramureș (MM) Satu Mare (SM) Sălaj (SJ)
Center Alba (AB) Brașov (BV) Covasna (CV) Harghita (HR) Mureș (MS) Sibiu (SB)
West Arad (AR) Caraș-Severin (CS) Gorj (GJ) Hunedoara (HD) Mehedinți (MH) Timiș (TM)
South–West Argeș (AG) Dâmbovița (DB) Dolj (DJ) Olt (OT) Teleorman (TR) Vâlcea (VL)
South Bucharest (B) Călărași (CL) Giurgiu (GR) Ialomița (IL) Ilfov (IF) Prahova (PH)
South–East Brăila (BR) Buzău (BZ) Constanța (CT) Galați (GL) Tulcea (TL) Vrancea (VN)
Promotion play-off The matches were played on 16, 23 and 30 June 2018.
|colspan="3" style="background-color:#97DEFF"|Region 1 (North-East) |colspan="2" style="background-color:#97DEFF"| ||0–1||0–1 ||w/o||w/o ||5–0||1–0 |- |colspan="3" style="background-color:#97DEFF"|Region 2 (North-West) |colspan="2" style="background-color:#97DEFF"| ||0–0||2–0 ||6–0||4–2 ||w/o||w/o |- |colspan="3" style="background-color:#97DEFF"|Region 3 (Center) |colspan="2" style="background-color:#97DEFF"| ||1–0||2–0 ||w/o||w/o ||2–0||1–3 |- |colspan="3" style="background-color:#97DEFF"|Region 4 (West) |colspan="2" style="background-color:#97DEFF"| ||0–1||2–1 ||4–0||3–0 (w/o) ||5–0||6–0 |- |colspan="3" style="background-color:#97DEFF"|Region 5 (South-West) |colspan="2" style="background-color:#97DEFF"| ||8–0||1–0 ||2–1||1–0 ||w/o||w/o |- |colspan="3" style="background-color:#97DEFF"|Region 6 (South) |colspan="2" style="background-color:#97DEFF"| ||1–1||2–4 ||0–7||1–10 ||5–1||1–1 |- |colspan="3" style="background-color:#97DEFF"|Region 7 (South-East) |colspan="2" style="background-color:#97DEFF"| ||2–2||0–3 ||0–3||1–5 ||0–4||4–3
League standings Alba County Team changes from the previous season Șurianu Sebeș achieved promotion to Liga III. Vointa Stremț (Series I winners), Arieșul Apuseni Baia de Arieș (Series II winners) and Cuprirom Abrud (Series III winners) were promoted from Liga V Alba. Gaz Metan Valea Lungă (16th place) was relegated to Liga V Alba. Inter Ciugud and Dalia Sport Daia Romană withdrew. Fortuna Lunca Mureșului (13th place) was spared from relegation. CS Zlatna, Euro Șpring and Metalul Aiud were admitted upon request.
Arad County Team changes from the previous season Șoimii Lipova achieved promotion to Liga III. UTA Arad II was relegated from Liga III. Victoria Nădlac (Series I winners) was promoted from Liga V Arad. Crișul Alb Buteni (Series II winners) declined promotion from Liga V Arad. UTA Arad III (15th place) and CS Dorobanți (16th place) were relegated to Liga V Arad.
Argeș County Team changes from the previous season Young Boys Slobozia (14th place; excluded) was relegated to Liga V Argeș. AS Colibași (Center Series winners) and CS Mioveni III (North Series winners) were promoted from Liga V Argeș. AS Miroși (South Series winners) declined promotion from Liga V Argeș. Vulturii Priboieni, Steaua Roșie Slobozia and Rucăr withdrew. Olimpia Suseni (15th place) and AS Micești (16th place) were spared from relegation. Real Bradu and Inter Câmpulung were admitted upon request.
Bacău County Team changes from the previous season SC Bacău was relegated from Liga III. It was subsequently renamed Gauss Bacău. AS Târgu Ocna (15th place) was relegated to Liga V Bacău. CSȘM Bacău (winners) and Uzu Dărmănești (runners-up) were promoted from Liga V Bacău. Biruința Letea Veche Bacău withdrew. Flamura Roșie Sascut (16th place) was spared from relegation. Dinamo Bacău was admitted upon request.
Bihor County Team changes from the previous season CS Oșorhei was relegated from Liga III. FC Paleu (14th place; withdrew), Padișul Bihorul Gurani (15th place; withdrew)) and Locadin Țețchea (16th place; withdrew)) were relegated to Liga V Bihor. Dacia Gepiu (Series II winners) was promoted from Liga V Bihor. FC Bihor Legenda 1902 (Series I winners) was promoted from Liga V Bihor but withdrew before the start of the season and was subsequently dissolved. CS Săcueni (Series I runners-up) and Biharea Vașcău (Series II runners-up) from Liga V Bihor were admitted to fill the vacancies. CS Oșorhei II was demoted as the reserve team following the relegation of the first team, CS Oșorhei, from Liga III.
Bistrița-Năsăud County Team changes from the previous season Progresul Tăure (14th place) was relegated to Liga V Bistrița-Năsăud. Dinamo Uriu (Series II winners) was promoted from Liga V Bistrița-Năsăud. AFC Budac (Series I winners) declined promotion from Liga V Bistrița-Năsăud. Viitorul Lechința (15th place) was spared from relegation.
Botoșani County Team changes from the previous season Sănătatea Darabani achieved promotion to Liga III. Arsenal Havârna (North Series winners) and FC Ripiceni (South Series winners) declined promotion from Liga V Botoșani. Luceafărul Mihai Eminescu, Progresul Ștefănești and Flacăra Vlăsinești withdrew during the previous season. Viitorul Dersca and Victoria Hlipiceni withdrew. AS 2000 Bucecea, Unirea Săveni, Viitorul Costești and Unirea Curtești were admitted upon request.
Brașov County Team changes from the previous season Viitorul Ghimbav achieved promotion to Liga III. Avântul Dumbrăvița (Brașov Series winners) was promoted from Liga V Brașov. Oltul Făgăraș (West Făgăraș Series winners) and Luceafărul Mărgineni (East Făgăraș Series winners) declined promotion from Liga V Brașov. ACS Hălchiu 2013 withdrew. Colțea Brașov, Inter Tărlungeni, SR Brașov and Voința Hurez were admitted upon request. ASF Zărnești was renamed Olimpic Zărnești. Cetatea Rupea-Homorod was renamed Cetatea Homorod.
Brăila County Team changes from the previous season Victoria Traian achieved promotion to Liga III. FC Urleasca (Series I winners), Tricolorul Lanurile (Series II winners) and Viitorul Cireșu (Series III) declined promotion from Liga V Brăila. Victoria Cazasu was renamed CSC Cazasu.
Championship play-off The teams started the championship play-off with half of the points accumulated in the regular season.
Championship play-out The teams started the championship play-out with half of the points accumulated in the regular season.
Bucharest Team changes from the previous season Progresul Spartac București achieved promotion to Liga III. Frăția București (16th place; withdrew) was relegated to Liga V Bucharest. Progresul Spartac București II (Series I winners) and Mișcarea Feroviară CFR București (Series II runners-up) were promoted from Liga V Bucharest. AFC Rapid București (Series II winners) and Asalt București (Series II runners-up) were promoted from Liga V Bucharest. Regal Sport Club Ferdinand I, Progresul București, Olimpic București, Electroaparataj București and Electrica București withdrew. Steaua București, Carmen București and ACS FC Dinamo București were admitted upon request. Romprim București (15th place) was spared from relegation. Mișcarea Feroviară CFR București was renamed Academia Rapid București.
Championship play-off The 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.
Buzău County Team changes from the previous season Metalul Buzău achieved promotion to Liga III. Gloria Vadu Pașii (15th place) and Șoimii Costești (16th place) were relegated to Liga V Buzău. FC Buzău (Series I winners), AS Balta Albă (Series II winners) were promoted from Liga V Buzău. Pescărușul Luciu (Series II runners-up and promotion/relegation play-off winners) ceded its place to Olimpia Râmnicu Sărat II. FC Buzău was renamed SCM Gloria Buzău.
Relegation play-off The 14th and 15th-placed teams of Liga IV Buzău faces the 2nd-placed teams in the two series of Liga V Buzău.
Caraș-Severin County Team changes from the previous season Recolta Rafnic (13th place) was relegated to Liga V Caraș-Severin. Foresta Armeniș (Caransebeș Zone winners) and Steaua Dunării Pojejena (Reșița Zone winners) were promoted from Liga V Caraș-Severin. Muncitorul Reșița and Ad Mediam Mehadia withdrew. Croația Clocotici was admitted upon request. Minerul Anina was renamed CSO Anina.
Călărași County Team changes from the previous season Agricola Borcea achieved promotion to Liga III. Dinamo Sărulești (14th place), Rapid Ulmeni (15th place) and Conpet Ștefan Cel Mare (16th place) were relegated to Liga V Călărași. Partizan Crivăț (winners) and Mostiștea Ulmu (runners-up) were promoted from the Series A of Liga V Călărași. Zarea Cuza Vodă (winners) and Tricolorul Jegălia (runners-up) were promoted from the Series B of Liga V Călărași.
Cluj County Team changes from the previous season Alb-Negru al Studenților Clujeni achieved promotion to Liga III. Viitorul Feleacu (Cluj Zone winners) and Unirea Iclod (Gherla Zone winners) were promoted from Liga V Cluj. Liga V Cluj winners Șoimii Câmpia Turzii (Câmpia Turzii Zone), Progresul Nireș (Dej Zone) and Gloria Cătina (Mociu Zone) declined promotion from Liga V Cluj. Ardealul Cluj and Unirea Florești withdrew. Universitatea Cluj II and Unirea Sporting Apahida were admitted upon request. Industria Sârmei Câmpia Turzii was renamed CSM Câmpia Turzii.
Constanța County Team changes from the previous season Farul Constanța achieved promotion to Liga III. CFR Constanța (18th place) was relegated to Liga V Constanța. CS Lipnița Carvăn (winners) and CS Agigea (3rd place) were promoted from Liga V Constanța. Litoral 22 Corbu (runners-up) declined promotion from Liga V Constanța. Victoria Mihai Viteazu and Avântul Comana withdrew. Voința Valu lui Traian (17th place) was spared from relegation.
Covasna County Team changes from the previous season KSE Târgu Secuiesc achieved promotion to Liga III. Oltul Chilieni (16th place) was relegated to Liga V Covasna. Stăruința Zagon (winners) and Dozsa Dalnic (runners-up) were promoted from Liga V Covasna.
Dâmbovița County Team changes from the previous season CS Petrești (16th place), Gaz Metan Finta (17th place; withdrew) and Libertatea Urziceanca (18th place; withdrew) were relegated to Liga V Dâmbovița. Unirea Colibasi (North Series winners), Unirea Bucșani (South Series winners) and Roberto Ziduri (West Series winners) were promoted from Liga V Dâmbovița. Dentaș Tărtășești and PAS Pucioasa withdrew. Olimpicii Ulmi and ACS Coada Izvorului were admitted upon request. Atletic Fieni was renamed CSM Fieni.
Dolj County Team changes from the previous season Știința Malu Mare (11th place) was relegated to Liga V Dolj. Flacăra Moțăței (Series I winners) was promoted from Liga V Dolj. Gloria Catane (Series II winners), Progresul Castranova (Series III winners), Victoria Știința Celaru (Series IV winners) and Voința Belcin (Series V winners) declined promotion from Liga V Dolj . Luceafărul Craiova (12th place) withdrew during the previous season. Unirea Leamna and Arena Bulls Preajba withdrew. FCU 1948 Craiova, Unirea Tricolor Dăbuleni, Jiul Podari, Progresul Băilești and Victoria Plenița were admitted upon request.
Championship play-off