Family name Gaivão (Gaivão 
, Гайван 
) , around the world, is a rare surname. The cognomen Gaivão is habitual in Portugal, where it is a rare surname, Ukraine, and Belarus. Not in comparison with a country's population, this name is the most popular in Ukraine, Russia, and Portugal.
| VARIANT | COUNTRY |
|---|---|
| Gaivão | Brazil, Portugal |
| Гайван | Ukraine, Belarus, Kazakhstan, Russia |
| manuel de gusmão de mascarenhas gaivão Portuguese judge (1901-1971), PT (b. 1901) |
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| josé gaivão researcher |
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| mariana gaivão Portuguese film director, PT (b. 1984) |
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