Last name Iguain (Iguain 
) , around the world, is a rare cognomen. The family name Iguain is characteristic of Argentina, where it is a rare surname, Chile, and the United States, where it is an extremely rare surname. Also, Iguain is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Iguain | Spain, Chile, United States, Argentina, Democratic Republic of the Congo |
| jose felix iguain Peruvian military personnel (1800-1851), PE (b. 1800) |
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| pedro joxe iguain ES (b. 1896) |
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| iñaki lasa iguain researcher |
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