1990 Ykkönen – Finnish League Division 1

League table for teams participating in Ykkönen, the second tier of the Finnish Soccer League system, in 1990.

Promotion/relegation playoff

 * KPV Kokkola - Jaro Pietarsaari 0–1
 * Jaro Pietarsaari - KPV Kokkola 4–2

Jaro Pietarsaari promoted, KPV Kokkola relegated.