The 2017–18 Slovenian PrvaLiga (also known as the Prva liga Telekom Slovenije for sponsorship reasons) was the 27th edition of the Slovenian PrvaLiga since its establishment in 1991.
A total of ten teams contested the league, including eight from the 2016–17 Slovenian PrvaLiga and two promoted from the 2016–17 Slovenian Second League.
Seating capacity only; some stadiums also have standing areas.
Ankaran played their home matches in Dravograd and Nova Gorica since their stadium, ŠRC Katarina, did not met PrvaLiga criteria.
The winner, Triglav Kranj, secured a place in the 2018–19 PrvaLiga season.