Around the globe, Рэкс (Reks 
, Рэкс 
) is a rare masculine first name. The forename Рэкс is characteristic of Brunei, where it is quite a rare masculine name, Saudi Arabia, where it is a very rare boy's name, and Indonesia. Not in comparison with a country's population, the name is most common in India, Indonesia, and Brunei. Also, Рэкс is the last name as well as the forename.