2017 Kakkonen
| Season | 2017 |
|---|---|
| Promoted | AC Kajaani Klubi 04 |
| Relegated | Sudet Kultsu FC FC Lahti Akatemia Peimari United NuPS EsPa KajHa Villiketut OTP |
← 2016 2018 → | |
A total of 36 teams contested the league divided into three groups, Lohko A (Group A), Lohko B (Group B) and Lohko C (Group C). 25 returning from the 2016 season, two relegated from Ykkönen and nine promoted from Kolmonen. The champion of each group and the best runner-up will qualify to promotion matches to decide which two teams get promoted to the Ykkönen. The bottom three teams in each group will qualify directly for relegation to Kolmonen. Each team will play a total of 22 matches, playing twice against each team of its group.
KTP and FC Jazz were relegated from the 2016 Ykkönen, while FC Honka and IF Gnistan were promoted to the 2017 Ykkönen.