Surname Ридер (Rider 
, Ryder , Reader ) , all over the world, is a common cognomen. The surname Ридер is characteristic of British Virgin Islands, where it is a common surname, Isle of Man, where it is quite a common surname, and New Zealand (explore the name in all countries). In absolute terms, it is the most numerous in the United States, the United Kingdom, and Indonesia. Much less frequently, Ридер is the forename as well as the last name.