| Jani-Petteri Helenius | |
| Team: | Jokerit |
| League: | SM-liiga |
| Position: | Forward |
| Height Ft: | 6 |
| Height In: | 0 |
| Weight Lb: | 183 |
| Shoots: | Left |
| Birth Date: | 1990 1, mf=yes |
| Birth Place: | Helsinki, Finland |
Jani-Petteri Helenius (born January 18, 1990) is a Finnish professional ice hockey player who currently plays for Jokerit of the SM-liiga.[1]