| Matias Vainionpää | |
| Birth Date: | 2 October 2001 |
| Birth Place: | Seinäjoki, Finland[1] |
| Position: | Defender |
| Currentclub: | Lahti |
| Youthyears1: | –2019 |
| Youthclubs1: | SJK |
| Years1: | 2019–2020 |
| Caps1: | 28 |
| Goals1: | 2 |
| Years2: | 2020–2023 |
| Caps2: | 45 |
| Goals2: | 2 |
| Years3: | 2024– |
| Caps3: | 28 |
| Goals3: | 1 |
| Nationalyears1: | 2020-2022 |
| Nationalteam1: | Finland U21[2] |
| Nationalcaps1: | 11 |
| Nationalgoals1: | 0 |
| Club-Update: | 27 October 2024 |
| Nationalteam-Update: | 19 April 2023 |
Matias Vainionpää (born 2 October 2001) is a Finnish professional footballer who plays for Ykkösliiga club Lahti as a defender.[3] [4]