Last name سیال (Sial 
, سیال 
) , in the world, is a common surname. The last name سیال is habitual in Pakistan, where it is quite a common surname, United Arab Emirates, where it is quite a rare surname, and Saudi Arabia. In absolute terms, the name is most common in Pakistan, India, and Saudi Arabia. Very seldom, سیال is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sial | United Arab Emirates, Oman, Pakistan, India, Saudi Arabia |
| سیال | Saudi Arabia, Afghanistan |
| محمد غازی سیال Pakistani poet, PK (b. 1933) |
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| نجف عباس سیال Pakistani politician, PK (b. 1959) |
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| مسز غزالہ سیال politician in Pakistan, PK (b. 1966) |
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| غزالہ سیال politician in Pakistan, PK (b. 1966) |
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| امجد حسین بی سیال 13th SAARC Secretary General, PK |
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