Cognomen ロイル (Royle 
, ロイル) , all around the world, is quite a common family name. The cognomen ロイル is characteristic of Isle of Man, where it is quite a common surname, the United Kingdom, where it is quite a rare surname, and Australia. In absolute terms, it is the most numerous in the United Kingdom, the United States, and Australia. Much less frequently, ロイル is the forename as well as the last name.