Cognomen روبي (Ruby 
, Robbie , Robe 
) , in the world, is a common last name. The cognomen روبي is habitual in Myanmar, where it is quite a common surname, Egypt, where it is quite a rare surname, and Mauritius. In absolute terms, it is the most numerous in Egypt, the United States, and Myanmar. More frequently, روبي is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Robbie, Ruby | Philippines, Ghana, United States, India, Myanmar |
| Robe | Indonesia, Philippines, United States, India, Myanmar |
| روبي | Saudi Arabia, Sudan, Egypt, Libya, Iraq |