Last name Appay (Appay 
, อุปเถย์ 
) , in the entire world, is a rare surname. The last name Appay is habitual in Philippines, where it is a rare surname, Thailand, and Australia, where it is a very rare surname. Measured by absolute frequency, this name is the most popular in Philippines, Thailand, and France. Likewise, Appay is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Appay | Australia, Philippines, France, India, Indonesia |
| อุปเถย์ | Thailand |
| claude appay FR (b. 1819) |
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| émile appay painter (1876-1935), FR (b. 1876) |
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| béatrice appay (b. 1953) |
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| victor appay researcher |
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| romain appay researcher (ORCID 0000-0003-4545-6063) |
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