Cognomen 洋平 (洋平 
, Yangping 
) , all around the world, is a rare surname. The surname 洋平 is habitual in China, where it is a very rare surname, Malaysia, where it is an extremely rare surname, and Canada. Measured by absolute frequency, it is the most numerous in China, Malaysia, and the United States. More frequently, 洋平 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 洋平 | China |
| Yangping | Taiwan, Italy, United States, Malaysia, China |
| 草彅 洋平 Japanese contributing editor, JP (b. 1976) |
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| 大林 洋平 Japanese actor and seiyū, JP (b. 1976) |
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