Surname Weast (Weast 
) , in the world, is a rare family name. The family name Weast is characteristic of the United States, where it is a rare surname, Indonesia, where it is a very rare surname, and Malaysia.
| VARIANT | COUNTRY |
|---|---|
| Weast | Indonesia, Malaysia, Philippines, United States, Canada |
| robert c. weast American chemist, US (b. 1916) |
|