2017–18 Slovenian Second League

The 2017–18 Slovenian Second League season was the 27th edition of the Slovenian Second League. The season began on 4 August 2017 and ended on 26 May 2018.

Competition format
Each team played a total of 30 matches (15 home and 15 away). Teams played two matches against each other (one home and one away).

Teams
On 29 June 2016, the Football Association of Slovenia decided to expand the Second League from 10 to 16 teams for the 2017–18 season.

The key for the 16 teams contesting the league was:
 * 1 relegated team from the 2016–17 Slovenian PrvaLiga
 * 7 teams ranked second to eighth in the 2016–17 Slovenian Second League
 * The best two teams from each of the four groups in the 2016–17 Slovenian Third League, for a total of 8 teams.

Stadiums and locations
Note: "Capacity" includes seating capacity only. Most stadiums also have standing areas.

Top goalscorers
Source: NZS

Attendance
Note 1:Team played the previous season in the Slovenian PrvaLiga. Note 2:Team played the previous season in the Slovenian Third League.