| Birth Date: | 9 October 1887 |
| Birth Place: | Helsinki, Finland |
| Death Date: | 4 December 1946 (aged 59) |
| Death Place: | Helsinki, Finland |
| Sport: | Artistic gymnastics |
| Show-Medals: | yes |
Kaarlo Eino "Stigi" Saastamoinen (9 October 1887 – 4 December 1946) was a Finnish gymnast.[1] He was the flag bearer for Finland at the 1912 Summer Olympics, where he won a team silver medal.