| Position: | Defense |
| Shoots: | Left |
| Height Ft: | 6 |
| Height In: | 0 |
| Weight Lb: | 181 |
| Ntl Team: | FIN |
| Birth Date: | June 5, 1945 |
| Birth Place: | Pori, Finland |
| Draft: | Undrafted |
| Career Start: | 1961 |
| Career End: | 1975 |
Pekka "Juha" Rantasila (born June 5, 1945) is a Finnish former professional ice hockey player who played in the SM-liiga. He played for Porin Karhut and HIFK. Rantasila was inducted into the Finnish Hockey Hall of Fame in 1989. Currently, he works a lawyer.