| Jan Helenius | |
| Nationality: | Finnish |
| Birth Date: | 13 October 1996 |
| Birth Place: | Kotka, Finland |
| Height: | 1.83 m |
| Weight: | 74 kg |
| Spike: | 330 cm |
| Block: | 310 cm |
| Position: | Outside spiker |
| Currentclub: | TUTO Volley |
| Currentnumber: | 17 |
| Years: | 2014–2016 2016–2018 2018–2019 2019– |
| Teams: | Rantaperkiön Isku LEKA Volley Raision Loimu Bigbank Tartu |
| Nationalyears: | 2015– |
Jan Helenius (born 13 October 1996) is a Finnish male volleyball player. He has been a part of the Finland men's national volleyball team. On club level he plays for TUTO Volley.[1]