Cognomen 平木 (平木 
, Хираки 
) , all over the world, is a very rare surname. The last name 平木 is habitual in Russia, where it is an extremely rare surname, and China. More frequently, 平木 is the forename as well as the last name.
| 平木 信二 Japanese businessperson (1910-1971), JP (b. 1910) |
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| 平木典子 Japanese psychologist, JP (b. 1936) |
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| 平木ひとみ actor, JP (b. 1972) |
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