Family name Jennelly (Jennelly 
) , throughout the world, is an extremely rare surname. The cognomen Jennelly is characteristic of Nicaragua, where it is a very rare surname, the United States, where it is an extremely rare surname, and Mexico. More frequently, Jennelly is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jennelly | Philippines, Mexico, Brazil, Peru, United States |