Surname 吉洋 (吉洋 
) , all around the world, is a rare last name. The last name 吉洋 is habitual in Eastern Asia, particularly China, where it is a very rare surname. More prevalently, 吉洋 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 吉洋 | China |
| 西田 吉洋 Japanese association football player, JP (b. 1973) |
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