The 1986-87 I-Divisioona season was the 13th season of the I-Divisioona, the second level of Finnish ice hockey. 12 teams participated in the league, and KooKoo won the championship. KooKoo, TuTo Hockey, HPK Hämeenlinna, and JoKP Joensuu qualified for the promotion/relegation round of the SM-liiga.
| Graph IRI | Count |
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| http://dbkwik.webdatacommons.org | 7 |