| Prevseason: | 2016–17 |
| Nextseason: | 2018–19 |
| Divizia A1 | |
| T Bg: |
|
| T Color: | white |
| Champions: | CSM București (1st title) |
| Runners Up: | Alba Blaj |
| Third Place: | Știința Bacău |
| Fourth Place: | Târgoviște |
| Relegated: | none |
| Teams: | 10 |
The 2017–18 Divizia A1 season was the 68th season of the Divizia A1, the highest professional volleyball league in Romania. CSM Volei Alba Blaj was the defending champion. At the end of the season, CSM București won their first title.
The competition format will be the same as in the previous season.
SCM U Craiova and CSU Galați were relegated to Divizia A2. Unic Piatra Neamț and SCM Ptești withdrew from Divizia A1.[1]
Agroland Timișoara and Universitatea Cluj promoted from Divizia A2.[2]
| Team | City | Arena | Capacity | |
|---|---|---|---|---|
| Agroland | Timișoara | Constantin Jude | 2,200 | |
| Alba | Blaj | Timotei Cipariu | 400 | |
| CSM | Bucharest | Sala Elite | 500 | |
| CSM | Lugoj | I.K. Ghermănescu | 400 | |
| CSM | Târgoviște | 2,000 | ||
| CSU Medicina | Târgu Mureș | Sala Sporturilor | 2,000 | |
| Dinamo | București | Dinamo | 2,538 | |
| Penicilina | Iași | Polyvalent Hall | 1,500 | |
| Știința | Bacău | Sala Sporturilor | 2,000 | |
| Universitatea | Cluj-Napoca | Horia Demian | 2,525 |
In the meeting of the Board of Directors of the Romanian Volleyball Federation from 26 February 2018 it was decided to cancel the play-out round, places 7–10. The final ranking for these places remains the same as that at the end of the regular season.[3]