Last name 江口 (Eguchi 
, 江口 ) , across the world, is quite a rare cognomen. The family name 江口 is habitual in Japan, where it is a rare surname, Singapore, and Brazil. Not in comparison with a country's population, it is the most numerous in Japan, Indonesia, and Brazil. Much less frequently, 江口 is the forename as well as the last name.
| 江口百合子 Japanese illustrator, JP (b. 1945) |
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| 江口憲一 JP (b. 1947) |
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| 江口裕之 JP (b. 1957) |
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| 江口桃子 Japanese announcer, JP (b. 1975) |
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| 江口のりこ Japanese actress, JP (b. 1980) |
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| 江口学 association football player, JP (b. 1984) |
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| 江口亮輔 Japanese baseball player, JP (b. 1984) |
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| 江口千夏 Japanese actress, JP (b. 1994) |
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