Cognomen Terwil (Terwil 
) , all over the world, is a very rare surname. The last name Terwil is habitual in Philippines, where it is a very rare surname, and Venezuela, where it is an extremely rare surname. Very seldom, Terwil is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Terwil | Venezuela, Philippines |