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Cognomen Strachan (Strachan , Srath , Страхан ) , in the entire world, is a common family name. The surname Strachan is characteristic of Latin America and the Caribbean, particularly Bahamas, where it is a common surname, Grenada, where it is quite a common surname, and British Virgin Islands (explore the name in all countries). Measured by absolute frequency, the name is most common in the United Kingdom, the United States, and Australia.