| Birth Date: | 13 October 1983 |
| Birth Place: | Helsinki, Finland |
| Height Ft: | 6 |
| Height In: | 1 |
| Weight Lb: | 189 |
| Shoots: | Left |
| Team: | Free Agent |
| Former Teams: | HIFK Hartford Wolf Pack Modo Hockey Dinamo Minsk Skellefteå AIK TPS KHL Medveščak Zagreb Leksands IF Schwenninger Wild Wings Iserlohn Roosters |
| Draft: | Undrafted |
| Career Start: | 2002 |
Hannu Pikkarainen (born October 13, 1983) is a Finnish professional ice hockey defenceman currently an unrestricted free agent who most recently played for the Iserlohn Roosters of the Deutsche Eishockey Liga (DEL).
Pikkarainen is a product of Helsinki-based club HIFK and made his professional debut with the club in the SM-liiga during the 2002–03 season. He left HIFK to play in the American Hockey League with the Hartford Wolf Pack during the 2006-07 season.[1] Pikkarainen saw action in seven AHL contests and played in eleven games for ECHL's Charlotte Checkers[2] that year before returning to HIFK the following season. After another two years with HIFK, he embarked on a journeyman career including stints in the Swedish Hockey League with Modo Hockey, Skellefteå AIK, Leksands IF,[3] two stints in the Kontinental Hockey League with HC Dynamo Minsk and Medvescak Zagreb[4] and a stop at TPS in the Finnish Liiga, before joining back HIFK.
On May 29, 2015, Pikkarainen concluded his third stint with HIFK and signed a one-year deal with German club Schwenninger Wild Wings.[5] When his contract was up, he agreed to terms with fellow DEL side Iserlohn Roosters inking a deal for the 2016–17 season.[6] In 41 games with the Roosters, Pikkarainen contributed with 2 goals and 18 points as Iserlohn finished out of playoff contention. On March 3, 2017, it was announced that his contract would not be renewed.[7]
In 2022 Pikkarainen was convicted of aggravated rape and sentenced to 2 years imprisonment.[8]