Cognomen Couso (Couso 
, Causa 
, كوسو 
) , throughout the world, is quite a rare family name. The family name Couso is habitual in Uruguay, where it is quite a rare surname, Argentina, and Spain. In absolute terms, the name is most common in Argentina, Italy, and Spain. Very seldom, Couso is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Couso | Italy, Spain, United States, Cuba, Argentina |
| Causa | Italy, Spain, United States, India, Argentina |
| كوسو | Sudan, Libya, Jordan, Saudi Arabia |
| josé maría calaza couso (b. 1852) |
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josé couso permuy Spanish photojournalist, ES (b. 1965) |
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javier couso permuy Spanish politician, ES (b. 1968) |
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| xaquín garcía couso Spanish politician, ES (b. 1953) |
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| luis couso chess player (b. 1967) |
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| jorge couso researcher |
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| dalia garcía couso ES (b. 1985) |
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