Last name Tajalli (Tajalli 
) , all over the world, is a rare family name. The cognomen Tajalli is habitual in Kuwait, where it is a rare surname, Iran, and United Arab Emirates. Not in comparison with a country's population, it is commonest in Bangladesh, Iran, and Indonesia. Likewise, Tajalli is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Tajalli | Indonesia, Iran, United States, India, Bangladesh |
| mahroo tajalli researcher |
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| saleheh tajalli researcher |
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| hassan tajalli American political scientist |
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| armin tajalli Ph.D. École Polytechnique Fédérale de Lausanne 2010 |
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