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Last name Orr (אור , Orr
, オア
) , all over the world, is a common cognomen. The surname Orr is habitual in Trinidad and Tobago, where it is quite a common surname, New Zealand, and Isle of Man (explore the name in all countries). Not in comparison with a country's population, it is commonest in the United States, the United Kingdom, and Canada. Much less frequently, Orr is the forename as well as the last name.