home-and-away two-legged basis. If tied on aggregate, the away goals rule was used. First round First Leg: 5 and 6 May. Second Leg: 11 and 12 May. |- ||2–5||0–9 ||7–2||2–1 ||0–4||0–3 ||1–4||0–1 |} Second round First Leg: 19 May. Second Leg: 26 May. 5-8 places |- ||1–1||1–6 ||4–3||0–1 |} 9-12 places |- ||4–4||1–5 ||5–3||2–3 |} Third round First Leg: 2 June. Second Leg: 8 and 10 June. 5-6 places |- ||1–2||1–3 |} 7-8 places |- ||8–1||8–5 |} 9-10 places |- ||5–3||3–4 |} 11-12 places |- ||6–1||0–3 |} Galați County Giurgiu County South Series North Series Championship play-off The championship play-off played between the best two ranked teams in each series of the regular season. All matches were played at Comunal Stadium in Bolintin-Deal on 5 and 7 June 2018, the semifinals and 10 June 2018, the final. Semi-finals Final Singureni won the 2017–18 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 Seria 1 Seria 2 Championship final The Championship final played between the winners of the two series. ||0–1||0–5 |} Bragadiru won the 2017–18 Liga IV Ilfov County and qualify to promotion play-off in Liga III. Maramureș County South Series North Series Championship final The championship final was played between the winners of the two series on 10 and 16 June 2018. Minaur Baia Mare won the 2017–18 Liga IV Maramureș County and qualify to promotion play-off in Liga III. Mehedinți County Championship play-off Championship play-out Mureș County Neamț County Championship play-off The championship play-off tournament between the best four teams played in a double round-robin tournament and the winner declared county champion and qualify for the promotion play-off to Liga III. The teams started with half of the points accumulated in the regular season. Olt County Prahova County Satu Mare County Sălaj County Sibiu County Suceava County Teleorman County Timiș County Tulcea County Serie A Serie B Championship play-off Vaslui County Relegation play-off First round Second round Promotion/relegation play-off Championship play-off Quarter-finals Semi-finals Final Flacăra Muntenii de Sus won the 2017–18 Liga IV Vaslui and qualify to promotion play-off in Liga III. Vâlcea County Relegation play-off The 9th and 10th-placed teams of Liga IV Vâlcea faces the 2nd-placed teams in the two series of Liga V Vâlcea. Vrancea County Group A Group B Group C Possible qualification to championship play-off At the end