Surname סיני (Sinai 
, Sinay 
, Sinaj 
) , in the entire world, is a common family name. The surname סיני is habitual in Guatemala, where it is quite a common surname, Albania, and Israel. Measured by absolute frequency, the name is most common in Guatemala, Indonesia, and Mexico. Likewise, סיני is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sinai | Guatemala, Israel, Mexico, Indonesia, India |
| Sinay | Guatemala, Mexico, Indonesia, India, United States |
| Sinaj | Guatemala, France, India, United States, Albania |
| סיני | Israel |
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דב סיני IL (b. 1922) |
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אריק סיני Israeli singer, IL (b. 1949) |
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| אפרים סיני IL (b. 1895) |
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| סיני אוקו Israeli philosopher, IL (b. 1905) |
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סיני דויטש IL (b. 1947) |
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אברהם סיני Lebanese Arab Muslim convert to Judaism, IL (b. 1963) |
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משה סיני IL (b. 1957) |
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| אלי סיני Israeli designer, IL (b. 1927) |
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סיני תור Israeli singer, IL (b. 1978) |
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רותי סיני Israeli journalist, IL |
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| משה סיני Israeli footballer, IL (b. 1961) |
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| סיני פתר IL (b. 1954) |
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| נופר סיני Israeli journalist, IL (b. 1975) |
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| יובל סיני IL |
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