Teams A total of eighteen teams contested the league, including thirteen sides from the 1984–85 season, one club relegated from the
1984–85 Yugoslav First League and four sides promoted from the Inter-Republic Leagues played in the 1984–85 season. The league was contested in a
double round robin format, with each club playing every other club twice, for a total of 34 rounds. Two points were awarded for wins and one point for draws.
Iskra Bugojno were relegated from the 1984–85 Yugoslav First League after finishing in the 17th place of the league table. The four clubs promoted to the second level were
AIK Bačka Topola,
Famos Hrasnica,
Koper and
Zadar.
League table ==East Division==