Cognomen Ригг (Rigg 
, Rygg 
, Ригг) , all over the world, is quite a common last name. The cognomen Ригг is habitual in Norway, where it is quite a common surname, Jamaica, where it is quite a rare surname, and the United Kingdom. Not in comparison with a country's population, it most frequently occurs in the United States, the United Kingdom, and Norway. Much less frequently, Ригг is the forename as well as the last name.