Globally, Issao (Issao 
) is a very rare masculine first name. The forename Issao is characteristic of Latin America and the Caribbean, particularly Brazil, where it is a very rare boy's name. More prevalently, Issao is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Issao | Tanzania, Brazil, Nigeria, Philippines, Democratic Republic of the Congo |
| issao takahashi (b. 1951) |
|
|
| issao imamura BR (b. 1968) |
|
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| issao minami university teacher, researcher, BR |
|