Cognomen 鲁比 (Ruby 
, Rubey 
, 鲁比 
) , around the globe, is a common family name. The family name 鲁比 is characteristic of Myanmar, where it is quite a common surname, Brunei, where it is quite a rare surname, and Denmark. Not in comparison with a country's population, the name is most common in the United States, Myanmar, and Mexico. More frequently, 鲁比 is the forename as well as the last name.