Nelonen or IV divisioona is the sixth level in the Finnish football league system and comprises 159 teams.

The IV divisioona was introduced in 1973 and in the mid-1990s became known as the Nelonen (Number Four in English and Fyran in Swedish).

There are 159 clubs in the Nelonen, divided in 14 groups of 9 to 12 teams each representing a geographical area.

During the course of a season (starting in April and ending in October) each club normally plays the others twice, once at their home ground and once at that of their opponents.

[1] The Football Association of Finland (Finnish: Suomen Palloliitto, SPL; Swedish: Finlands Bollförbund, FBF) administers the Nelonen.