Last name 悠 (悠 
) , in all the world, is a common surname. The cognomen 悠 is characteristic of Eastern Asia, particularly China, where it is quite a rare surname. Also, 悠 is the forename as well as the last name.
| 伊瀬知 悠 Japanese actor, JP (b. 1994) |
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| 梅澤 悠 JP (b. 1987) |
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