Last name Hiley-Thomas (Hiley-Thomas 
) , across the world, is an extremely rare family name. The surname Hiley-Thomas is habitual in Northern Europe, particularly the United Kingdom, where it is an extremely rare surname. Parts of the name also exists independently as a last name Hiley, and a first name Thomas.
| VARIANT | COUNTRY |
|---|---|
| Hiley-Thomas | United Kingdom |