All over the world, Tiantian (Tiantian 
, 添添 , Тиантиан 
) is quite a rare epicene given name. The first name Tiantian is habitual in Taiwan, where it is quite a rare unisex name, Hong Kong, where it is a rare female name, and Singapore, where it is a rare unisex name. Measured by absolute frequency, it most frequently occurs in China, Taiwan, and the United States. Very seldom, Tiantian is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Tiantian | Malaysia, Japan, Taiwan, United States, China |
| 添添 | China |
| Тиантиан | Russia |
| Тяньтянь | Russia, Ukraine |
| li tiantian Chinese sprint canoer (b. 1953) |
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| tiantian ma researcher |
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| tiantian dai Ph.D. Queen's University at Kingston 2012 |
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| tiantian hu researcher |
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| dong tiantian researcher |
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| tiantian luo researcher ORCID 0000-0002-1895-190X |
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| tiantian luo researcher (ORCID 0000-0002-1987-8978) |
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| tiantian chen researcher (ORCID 0000-0002-6021-724X) |
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| tiantian wang researcher (ORCID 0000-0002-7623-7245) |
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| tiantian wu researcher (ORCID 0000-0001-6048-2345) |
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| tiantian feng researcher (ORCID 0000-0002-2053-9068) |
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| tiantian wang researcher (ORCID 0000-0002-0872-5095) |
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| tiantian wu researcher (ORCID 0000-0002-8147-4077) |
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| tiantian song researcher |
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| tiantian liu researcher ORCID 0000-0001-6259-5474 |
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