Family name Qaiser (Qaiser 
, قیصر 
, ไกเซอร์ 
) , worldwide, is a common cognomen. The last name Qaiser is habitual in United Arab Emirates, where it is quite a common surname, Pakistan, where it is quite a rare surname, and Oman. Not in comparison with a country's population, this name is the most popular in Pakistan, Saudi Arabia, and United Arab Emirates. More frequently, Qaiser is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Qaiser | United Arab Emirates, Oman, Pakistan, India, Saudi Arabia |
| قیصر | Iraq, United Arab Emirates, Saudi Arabia, Iran |
| ไกเซอร์ | Thailand |
| syed azhar shah qaiser Indian Urdu scholar and writer, IN (b. 1920) |
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| mohammad qaiser botanist, PK (b. 1946) |
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| sohail qaiser Pakistani squash player, PK (b. 1963) |
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| rubeena qaiser Indian businessperson (born 1964, child of Syed Qaiser Ali), IN (b. 1964) |
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| iman qaiser researcher |
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| talha qaiser researcher |
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| taha qaiser researcher |
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| shazeena qaiser researcher |
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| nasim akhtar shah qaiser Indian Islamic scholar |
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| abu qaiser Indian politician, IN |
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| khalil qaiser Pakistani film director |
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| beenish qaiser researcher |
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| tanveer a qaiser researcher |
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| kanza n qaiser researcher |
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| jamal a. qaiser (b. 1972) |
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