Cognomen モーティマー (Mortimer 
, モーティマー) , in all the world, is a common surname. The family name モーティマー is characteristic of Bahamas, where it is quite a common surname, Isle of Man, and Reunion (explore the name in all countries). Not in comparison with a country's population, this name is the most popular in the United Kingdom, the United States, and Australia. Very seldom, モーティマー is the forename as well as the last name.