Around the globe, Hillyer-Timmerman (Hillyer-Timmerman 
) is an extremely rare unknown gender given name. Much more prevalently, Hillyer-Timmerman is the last name as well as the forename. Parts of the name also exists independently as a last name Hillyer, and a last name Timmerman.
| VARIANT | COUNTRY |
|---|---|
| Hillyer-Timmerman | United States |