Surname 枝洋 (枝洋 
) , in all the world, is a very rare cognomen. The surname 枝洋 is habitual in Eastern Asia, particularly China, where it is an extremely rare surname. More prevalently, 枝洋 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 枝洋 | China |