2017–18 Liga I
The 2017–18 Liga I was the 100th season of the Liga I, the top professional league for Romanian association football clubs. The season began on 14 July 2017 and ended on 2 June 2018, being the third to take place since the play-off/play-out format has been introduced.
Defending champions Viitorul Constanța came fourth. CFR Cluj became the new champions in the last fixture of the play-off, clinching their fourth league title after finishing one point above FCSB. Juventus București and Sepsi Sfântu Gheorghe entered as the promoted teams from the 2016–17 Liga II, but only the latter managed to avoid relegation.
Since Romania dropped several places in the UEFA association coefficient rankings, only the title winner qualified for the UEFA Champions League.
Teams
The league consists of 14 teams: twelve teams from the 2016–17 Liga I and two new teams from the 2016–17 Liga II.Teams promoted to the Liga I
The first club to be promoted was Juventus București, following their 3–1 win against Balotești on 30 April 2017. Juventus will play in the Liga I for the first time in their history.
The second club to be promoted was Sepsi Sfântu Gheorghe, following their 1–1 draw against Mioveni on 3 June 2017. Sepsi will play in the Liga I for the first time in their history.
Teams relegated to the Liga II
The first club to be relegated was Târgu Mureș, which were relegated on 19 May 2017 following a 0–1 defeat against Pandurii Târgu Jiu, ending their 3-year stay in the top flight.
The second and final club to be relegated was Pandurii Târgu Jiu, which were relegated on 4 June 2018 following their 1–2 defeat against Botoșani, ending their 12-year stay in the top flight.
Venues
Personnel and kits
Note: Flags indicate national team as has been defined under FIFA eligibility rules. Players and Managers may hold more than one non-FIFA nationality.| Team | Manager | Captain | Kit manufacturer | Shirt sponsor |
| ACS Poli Timișoara |  | Gabriel Cânu |  Joma | Vox Technology Park, Casa Rusu |
| Astra Giurgiu | | Alexandru Stan | Joma | Tinmar |
| Botoșani | | Alberto Cobrea |  Nike /  Erreà | Elsaco |
| CFR Cluj | |  Mário Camora | Joma | NTT Data |
| Concordia Chiajna | | Marian Cristescu | Lotto | — |
| CSM Politehnica Iași | | Andrei Cristea | Joma | Municipiul Iași, Cotnari |
| Dinamo București | Florin Bratu | Dan Nistor | Macron | Orange |
| FCSB | | Florin Tănase | Nike | :ro:City Insurance|City Insurance |
| Gaz Metan Mediaș | | Marius Constantin | Joma | Romgaz |
| Juventus București | | Liviu Băjenaru | Joma | Phoenicia Hotels |
| Sepsi Sfântu Gheorghe | Eugen Neagoe | Attila Hadnagy |  Adidas | Diószegi, Gyermelyi |
| Universitatea Craiova | | Alexandru Băluță | Joma | Betano.com |
| Viitorul Constanța | | Ianis Hagi | Nike | Holsten, Pepsi |
| Voluntari | | Daniel Novac | Puma | Academia de Fotbal Voluntari |
Managerial changes
Regular season
In the regular season the 14 teams will meet twice, a total of 26 matches per team, with the top 6 advancing to the Championship round and the bottom 8 qualifying for Relegation round.Table
Results
Positions by round
Championship play-offs
The top six teams from Regular season would meet twice for places in 2018–19 UEFA Champions League and 2018–19 UEFA Europa League as well as deciding the league champion. Teams started the Championship round with their points from the Regular season halved, rounded upwards, and no other records carried over from the Regular season.Table
Results
Positions by round
Relegation play-outs
The bottom eight teams from regular season will meet twice to contest against relegation. Teams start the Relegation round with their points from the Regular season halved, rounded upwards, and no other records carried over from the Regular season. The winner of the Relegation round finishes 7th in the overall season standings, the second placed team - 8th, and so on, with the last placed team in the Relegation round being 14th.Table
Results
Positions by round
Promotion/relegation play-offs
The 12th-placed team of the Liga I faced the 3rd-placed team of the Liga II.Notes:
- Voluntari remained in Liga I and Chindia Târgoviște remained in Liga II.
Season statistics
Top scorers
| Rank | Player | Club | Goals |
| 1 | George Țucudean | Viitorul Constanța / CFR Cluj | 15 |
| 1 |  Harlem Gnohéré | FCSB | 15 |
| 3 | Paul Batin | Concordia Chiajna | 13 |
| 4 | Alexandru Mitriță | Universitatea Craiova | 12 |
| 5 |  Gustavo | Universitatea Craiova | 11 |
| 5 | Alexandru Ioniță | Astra Giurgiu / CFR Cluj | 11 |
| 5 | Alexandru Băluță | Universitatea Craiova | 11 |
| 5 | Mihai Roman | Botoșani | 11 |
| 9 | Florin Tănase | FCSB | 10 |
| 9 | Dennis Man | FCSB | 10 |
| 11 | Constantin Budescu | FCSB | 9 |
| 11 | Andrei Cristea | CSM Politehnica Iași | 9 |
| 11 | István Fülöp | Sepsi Sfântu Gheorghe | 9 |
| 11 | Marian Cristescu | Concordia Chiajna | 9 |
| 11 |  Mario Rondón | Gaz Metan Mediaș | 9 |
| 11 | Daniel Popa | Botoșani / Dinamo București | 9 |
| 11 | Diogo Salomão | Dinamo București | 9 |
| 11 | Adrian Bălan | Voluntari | 9 |
Hat-tricks
4 Player scored four goalsClean sheets
| Rank | Player | Club | Clean sheets |
| 1 |  Jaime Penedo | Dinamo București | 14 |
| 1 |  Giedrius Arlauskis | CFR Cluj | 14 |
| 1 | Alberto Cobrea | Botoșani | 14 |
| 4 |  Plamen Iliev | Astra Giurgiu | 12 |
| 5 | Victor Rîmniceanu | Viitorul Constanța / Sepsi Sfântu Gheorghe | 11 |
| 6 | Florin Niță1 | FCSB | 10 |
| 7 | Cosmin Vâtcă | CFR Cluj | 8 |
| 8 |  Nicolae Calancea | Universitatea Craiova | 7 |
| 8 | Cristian Bălgrădean | Concordia Chiajna / FCSB | 7 |
| 10 | Dragoș Balauru | Voluntari | 6 |
| 10 | Virgil Drăghia | Juventus București | 6 |
| 10 | Cătălin Straton | ACS Poli Timișoara | 6 |
| 10 | Răzvan Pleșca | Gaz Metan Mediaș | 6 |
1 Florin Niță was transferred to Sparta Prague during the winter transfer window.
Discipline
Player
- Most yellow cards: 14
- * István Fülöp
- Most red cards: 2
- * Anatole Abang
- * Ionuț Cioinac
- * Diogo Salomão
- * Kévin Boli
- * Kamer Qaka
- * Mădălin Mihăescu
- * Mihai Pintilii
- * Gabriel Cânu
- * Dragoș Balauru
Club
- Most yellow cards: 116
- *CSM Politehnica Iași
- Most red cards: 9
- *Astra Giurgiu
Attendances
Awards
Best Team of the Championship Play-offs
| Player | Team | Position |
 Giedrius Arlauskis | CFR Cluj | Goalkeeper |
| Cristian Manea | CFR Cluj | Defender |
| Paulo Vinícius | CFR Cluj | Defender |
 Bogdan Planić | FCSB | Defender |
| Marko Momčilović | FCSB | Defender |
| Alexandru Mitriță | Universitatea Craiova | Midfielder |
 Emmanuel Culio | CFR Cluj | Midfielder |
| Constantin Budescu | FCSB | Midfielder |
| Ianis Hagi | Viitorul | Forward |
| George Țucudean | CFR Cluj | Forward |
| Harlem Gnohéré | FCSB | Forward |