Cognomen Gagan (Gagan 
, Go 
, جاجان 
) , in the entire world, is a widespread last name. The surname Gagan is habitual in Philippines, where it is quite a common surname, Macao, and United Arab Emirates (explore the name in all countries). Not in comparison with a country's population, the name is most common in India, Philippines, and Indonesia. Likewise, Gagan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gagan | Indonesia, Saudi Arabia, Philippines, United States, India |
| Go | Indonesia, Egypt, Philippines, India, Myanmar |
| جاجان | Turkey, Iran, Syria, Jordan, Iraq |
| Гаган | Kazakhstan, Ukraine, Russia |
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edward gagan politician in Massachusetts, US (b. 1849), US (b. 1849) |
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william gagan journalist, US (b. 1981) |
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| david gagan historian, CA (b. 1940) |
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jacob gagan Australian rugby league footballer, AU (b. 1993) |
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| jeannette marie gagan (b. 1936) |
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| jerzy gagan researcher |
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