Throughout the world, Coleby (Coleby 
) is a very rare predominantly masculine, but scarcely female given name. The forename Coleby is characteristic of Northern America, particularly the United States, where it is a very rare principally boy's, but very seldom feminine name. More frequently, Coleby is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Coleby | Australia, Canada, United States, United Kingdom, Bahamas |