Family name ハッピー (Happy 
, ハッピー 
) , all over the world, is a common cognomen. The cognomen ハッピー is habitual in Sub-Saharan Africa, particularly Nigeria, where it is quite a common surname, Namibia, where it is quite a rare surname, and Eswatini. Not in comparison with a country's population, the name is most common in Nigeria, Bangladesh, and Indonesia. More frequently, ハッピー is the forename as well as the last name.