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