Across the world, เร็กซ์ (Rek 
, Rexh 
, เร็กซ์ 
) is quite a rare epicene given name. The forename เร็กซ์ is habitual in Albania, where it is quite a rare boy's name, Ethiopia, where it is a rare gender-neutral name, and Saudi Arabia. In absolute terms, it most frequently occurs in Ethiopia, India, and Indonesia. Likewise, เร็กซ์ is the last name as well as the forename.