Cognomen ロアン (Rohan 
, ロアン) , globally, is a common family name. The cognomen ロアン is characteristic of British Virgin Islands, where it is quite a common surname, Mauritius, and Sri Lanka (explore the name in all countries). Measured by absolute frequency, it is commonest in Bangladesh, Sri Lanka, and the United States. More prevalently, ロアン is the forename as well as the last name.