Cognomen Dusay (Dusay 
) , all over the world, is a very rare last name. The family name Dusay is characteristic of Thailand, where it is a very rare surname, France, where it is an extremely rare surname, and Venezuela. In absolute terms, it most frequently occurs in Thailand, France, and the United States. Likewise, Dusay is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dusay | Thailand, France, United States, India, Mexico |
| josep maria despujol i dusay politician, ES (b. 1812) |
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marj dusay American actress (1936–2020), US (b. 1936) |
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| alex dusay Indonesian footballer, ID (b. 1999) |
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