Cognomen イーサン (Ethan 
, イーサン 
) , in the world, is quite a common last name. The cognomen イーサン is habitual in Mauritius, where it is quite a rare surname, Hong Kong, and Singapore. Not in comparison with a country's population, this name is the most popular in Bangladesh, Nigeria, and Indonesia. More prevalently, イーサン is the forename as well as the last name.