Cognomen Nishikori (Nishikori 
) , all around the world, is a very rare last name. The cognomen Nishikori is habitual in Philippines, where it is an extremely rare surname, the United Kingdom, and China. In absolute terms, this name is the most popular in China, the United States, and Philippines. Much less frequently, Nishikori is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Nishikori | China, United Kingdom, Malaysia, Philippines, United States |
Nishikohri, Nishikoori, ニシキオリ, and ニシコリ
| eri nishikori mother of Kei Nishikori |
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| kiyoshi nishikori father of Kei Nishikori |
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| momoko nishikori researcher |
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| reina nishikori sister of Kei Nishikori |
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| kenji nishikori researcher |
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| shu nishikori researcher |
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| atsushi nishikori |
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| nishikori no tora |
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