Worldwide, Omalley (Omalley 
) is a very rare epicene first name. The forename Omalley is characteristic of the United States, where it is an extremely rare unisex name, and China, where it is an extremely rare feminine name. Much more frequently, Omalley is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Omalley | Australia, Canada, Ireland, United Kingdom, United States |