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Cognomen Siulai (July
, Siulai
) , worldwide, is a common family name. The surname Siulai is habitual in Myanmar, where it is quite a common surname, Botswana, and Brunei. In absolute terms, it is the most numerous in Myanmar, Indonesia, and Colombia. More prevalently, Siulai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| July | Philippines, Colombia, Myanmar, India, South Africa |
| Siulai | Canada, Malaysia, Hong Kong, United States, Venezuela |