| Competition: | Ykkönen |
| Season: | 2015 |
| Winners: | PS Kemi |
| Promoted: | PS Kemi PK-35 Vantaa |
| Relegated: | MP VIFK |
| Promotion To: | 2016 Veikkausliiga |
| League Topscorer: | Kalle Multanen (19 goals) |
| Matches: | 135 |
| Total Goals: | 396 |
| Biggest Home Win: | Haka 6–0 VIFK (17 June) |
| Biggest Away Win: | VIFK 0–4 JJK (23 May) FC Jazz 1–5 MP (22 June) VIFK 1–5 TPS (2 August) FC Jazz 0–4 PS Kemi (16 August) MP 0–4 PK-35 Vantaa (24 September) |
| Highest Scoring: | Haka 4–4 EIF (21 May) FC Haka 7–4 VIFK (17 October) |
| Prevseason: | 2014 |
| Nextseason: | 2016 |
The 2015 Ykkönen began on 2 May 2015 and ended on 17 October 2015. The winning team qualified directly for promotion to the 2016 Veikkausliiga 2016, while the second-placed team had to play a play-off against the eleventh-placed team from Veikkausliiga to decide who would play in that division. The bottom two teams were relegated to Kakkonen.[1]
A total of ten teams contested in the league, including five sides from the 2014 season, TPS who was relegated from Veikkausliiga, EIF and PS Kemi who promoted from Kakkonen after winning the promotion play-offs, VIFK, the winner of Kakkonen 2014 Western Group as a replacement for promoted Ilves[2] and MP, the runner-up Kakkonen 2014 Eastern Group as a replacement for MYPA.[3] [4]
FC Viikingit and JIPPO were relegated from 2014 Ykkönen.
HIFK, the champion of 2014 Ykkönen, KTP, the runner-up of 2014 Ykkönen, and Ilves, which finished third in Ykkönen were promoted to the 2015 Veikkausliiga.
| Club | Location | Stadium | Capacity | Manager | |
|---|---|---|---|---|---|
| AC Oulu | Oulu | Raatin Stadion | 6,996 |  | |
| EIF | Raseborg | Ekenäs Centrumplan | 2,500 | | |
| FC Jazz | Pori | Porin Stadion | 12,000 | ||
| Haka | Valkeakoski | Tehtaan kenttä | 3,516 | | |
| JJK | Jyväskylä | Harjun stadion | 3,000 | | |
| MP | Mikkeli | Mikkelin Urheilupuisto | 7,000 | | |
| PK-35 Vantaa | Vantaa | ISS Stadion | 4,500 | | |
| PS Kemi | Kemi | Sauvosaari | 2,500 | | |
| TPS | Turku | Urheilupuiston Yläkenttä | 2,675 | | |
| VIFK | Vaasa | Hietalahti Stadium | 4,600 | |
| Team | Outgoing manager | Manner of departure | Date of vacancy | Incoming manager | Date of appointment | Table |
|---|---|---|---|---|---|---|
| FC Jazz | Jani Uotinen | End of contract | n/a | John Allen | 30 October 2014[5] | Pre-season |
| Haka | Juho Rantala | End of contract | n/a | Kari Martonen | 17 November 2014[6] | Pre-season |
| EIF | Jari Rantanen | End of contract | n/a | Jens Mattfolk | 19 November 2014[7] | Pre-season |
| PS Kemi | Tommy Taylor | Personal reasons | 5 January 2015 | Jari Åhman | 9 January 2015[8] | Pre-season |
| PK-35 Vantaa | Jari Europaeus | Shefki Kuqi | 4 February 2015[9] | Pre-season | ||
Source: palloliitto.fi
| Rank | Player | Club | Goals |
|---|---|---|---|
| 1 | Kalle Multanen | Haka | 19 |
| 2 |  Pablo Couñago | PK-35 Vantaa | 17 |
| Billy Ions | PS Kemi | 17 | |
| 4 | Jussi Aalto | TPS | 11 |
| 5 | Elias Ahde | FC Jazz | 9 |
| Antto Hilska | JJK | 9 | |
 Saša Jovović | PS Kemi | 9 | |
| 8 | Samu-Petteri Mäkelä | FC Jazz | 8 |
| 9 |  Christian Eissele | PS Kemi | 7 |
| Aleksis Lehtonen | JJK | 7 | |
| Lasse Linjala | VIFK | 7 | |
| Mateo | PK-35 Vantaa | 7 | |
| Masar Ömer | PK-35 Vantaa | 7 | |
| Ilkka Santahuhta | FC Jazz | 7 | |
| Robert Taylor | JJK | 7 | |
| Jasse Tuominen | MP | 7 | |
| 17 | 6 players | 6 | |
| 23 | 7 players | 5 | |
| 30 | 10 players | 4 | |
| 40 | 19 players | 3 | |
| 59 | 15 players | 2 | |
| 74 | 39 players | 1 | |
| Month | Player of the Month | |
|---|---|---|
| May[10] | Pablo Couñago (PK-35 Vantaa) | |
| June[11] | Oskari Forsman (TPS) | |
| July[12] | Mikko Manninen (JJK) | |
| August[13] | Samu-Petteri Mäkelä (FC Jazz) | |
| September[14] | Ymer Xhaferi (PK-35 Vantaa) |