Cognomen Melphy (Melphy 
) , throughout the world, is an extremely rare family name. The family name Melphy is characteristic of Northern America, particularly the United States, where it is an extremely rare surname. More prevalently, Melphy is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Melphy | India, United States, South Africa, Philippines |
| cody melphy American rugby union player, US (b. 1993) |
|