Family name グレッグ (Greg 
, Gregg , グレッグ 
) , in all the world, is a common last name. The surname グレッグ is habitual in Saint Vincent and the Grenadines, where it is quite a common surname, Guernsey, and Saint Lucia (explore the name in all countries). Not in comparison with a country's population, it is the most numerous in the United States, the United Kingdom, and Nigeria. More frequently, グレッグ is the forename as well as the last name.