Across the world, Ikuko (Ikuko 
, イクコ , 郁子 ) is quite a rare unisex given name. The first name Ikuko is habitual in Japan, where it is a rare unisex name, Australia, where it is a very rare girly name, and the United States. In absolute terms, it is commonest in Japan, the United States, and China. More frequently, Ikuko is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Ikuko | China, Japan, Brazil, United States, Tanzania |
| イクコ | Japan |
| 郁子 | China |
| Икуко | Russia |
| ikuko suematsu (b. 1868) |
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| ikuko ōnishi (b. 1870) |
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| ikuko fukuyama (b. 1923) |
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| ikuko mochida (b. 1929) |
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| ikuko abe JP (b. 1957) |
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| ikuko fukita Japanese softball player (b. 1972) |
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| ikuko okamoto (b. 1967) |
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| ikuko ito researcher |
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| ikuko aiba researcher (ORCID 0000-0001-9312-5707) |
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| ikuko hara-nishimura researcher |
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| ikuko kakizaki researcher (ORCID 0000-0002-6702-5830) |
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| ikuko uwano researcher (ORCID 0000-0003-3470-7795) |
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| ikuko hayashi researcher |
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| ikuko sakai researcher (ORCID 0000-0003-1715-0331) |
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| ikuko miyazaki researcher (ORCID 0000-0002-2732-094X) |
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Abe, Hamada, Fujita, Yamada, Shimizu, Hayashi, Okamoto, Yoshida, Miyamoto, Murakami, Sugimoto, Kawamura, Kusumoto, Nakamura, Ichihara, Watanabe, Yamamoto, Matsumoto, Kobayashi, Takahashi, Nakashima, Nishimura, Harada, Nakano, Takano, Tanaka, Ito, Ono, Oda, Mori, Sato, Kato, Goto, Noda, Endo, Ueda, Yamaguchi, Maeda, Saito, Fujii, Inoue, Okada, Murata, Sasaki, Suzuki, Kozeki, Kojima, Kimura, Miura, and Hirabayashi