Last name רקס (Rex 
, Reks 
, רקס 
) , all around the world, is a common family name. The family name רקס is habitual in Greenland, where it is quite a common surname, Papua New Guinea, where it is quite a rare surname, and Macao. Not in comparison with a country's population, it is commonest in the United States, Nigeria, and Germany. More frequently, רקס is the forename as well as the last name.