Across the world, Vaajakallio (Vaajakallio 
) is an extremely rare unknown gender first name. Much more frequently, Vaajakallio is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Vaajakallio | Finland |
| maire vaajakallio Finnish journalist (1923-2008), FI (b. 1923) |
|