Last name Custeau (Custeau 
) , in the world, is a rare cognomen. The surname Custeau is characteristic of Canada, where it is a rare surname, New Zealand, and Argentina. Not in comparison with a country's population, the name is most common in Canada, the United States, and Argentina.
| VARIANT | COUNTRY |
|---|---|
| Custeau | Australia, United States, Canada, Argentina, New Zealand |
| maurice custeau Canadian politician, CA (b. 1916) |
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| helene custeau Quebec short story writer, novelist, and playwright (b. 1950) |
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| g. r. custeau Ph.D. University of Waterloo 1971 |
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| denise custeau CA |
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