All over the world, 律子 (Ritsuko 
, 律子 ) is quite a rare feminine given name. The given name 律子 is habitual in Japan, where it is a rare girly name, the United States, where it is a very rare female name, and China, where it is an extremely rare boy's name. Very seldom, 律子 is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Ritsuko | Japan, China, Australia, United States, Brazil |
| 律子 | China |
律子 is also a name for the fictitious and mythical characters: Ritsuko Akagi , the fictional character from Neon Genesis Evangelion and Ritsuko Akizuki , character in The Idolmaster.
| 森律子 Japanese actress, JP (b. 1890) |
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| 能城律子 Japanese businessperson, JP (b. 1935) |
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| 大藏律子 Japanese politician, JP (b. 1939) |
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| 中山律子 bowler, JP (b. 1942) |
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| 井波律子 Japanese literary scholar, JP (b. 1944) |
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| 岩波律子 Japanese cinéaste, JP (b. 1950) |
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| 田甫律子 Japanese artist, JP (b. 1950) |
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| 久木田律子 Japanese mangaka, JP (b. 1951) |
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| 岡崎 律子 Japanese singer (1959-2004), JP (b. 1959) |
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| 原律子 Japanese mangaka, JP (b. 1962) |
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| 佐藤律子 Japanese badminton player, JP (b. 1965) |
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| 阿部律子 Japanese tarento, JP (b. 1967) |
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| 三辺律子 Japanese translator, JP (b. 1968) |
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| 島田律子 Japanese actress, JP (b. 1968) |
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| 笠井律子 Japanese seiyū, JP (b. 1971) |
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