Family name 昌彦 (Changyan 
, 昌彦 ) , in the world, is a rare surname. The cognomen 昌彦 is characteristic of Thailand, where it is a very rare surname, China, and Spain, where it is an extremely rare surname. Predominantly, 昌彦 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Changyan | China, Spain, Taiwan, Thailand, United States |
| 昌彦 | China |
| 有馬 昌彦 Japanese actor (1925-1991), JP (b. 1925) |
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| 大國 昌彦 Japanese businessperson (1929-2012), JP (b. 1929) |
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| 石栗 昌彦 Japanese actor, JP (b. 1967) |
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