Last name Ayutthaya (Ayutthaya 
) , all over the world, is a very rare cognomen. The last name Ayutthaya is characteristic of Thailand, where it is a rare surname, Australia, where it is a very rare surname, and Germany, where it is an extremely rare surname. Also, Ayutthaya is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ayutthaya | Brazil, Australia, United States, Thailand, Germany |
| thanunthorn suban na ayutthaya researcher |
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| natthaporn sudas na ayutthaya researcher (ORCID 0000-0001-7957-5867) |
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| nida suthat na ayutthaya |
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