The 2017 Ykkönen is the 46th season of Ykkönen, the second highest football league in Finland. The season will start on 29 April 2016 and end in 21 October 2016. The winning team will qualify directly for promotion to the 2018 Veikkausliiga, the second has to play a play-off against the eleventh team from Veikkausliiga to decide who will play in that division. The bottom 2 teams will qualify directly for relegation to Kakkonen. PK-35 Vantaa, who were relegated from Veikkausliiga, declared bankruptcy and withdrew their spot from the league. OPS took their spot in the league.