Henri Aarnio
Henri Aarnio is a Finnish male badminton player. He started playing badminton at 9 years old, then at age 19, he won the Finnish International Junior Championships in boys' singles. In 2015, he was the runner-up at the Slovak Open in the men's singles event and in 2016, he became the runner-up of the Hellas Open in the mixed doubles event with Jenny Nyström. In 2017, he became the runner-up at the Estonian International tournament in the men's doubles event partnered with Iikka Heino.
Achievements
BWF International Challenge/Series (5 runners-up)
Men's singles| Year | Tournament | Opponent | Score | Result |
| 2017 | Hellas Open |  Kim Bruun | 12–21, 15–21 | Runner-up |
| 2015 | Slovak Open |  Alex Lane | 15–21, 9–21 | Runner-up |
Men's doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 2017 | Hellas Open |  Iikka Heino | Kasper Antonsen Niclas Nohr | 17–21, 12–21 | Runner-up |
| 2017 | Estonian International | Iikka Heino |  Bastian Kersaudy Julien Maio | 13–21, 14–21 | Runner-up |
Mixed doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 2016 | Hellas Open | Jenny Nyström |  Pawel Pietryja Aneta Wojtkowska | 17–21, 17–21 | Runner-up |