Family name Hiếu (Hiếu 
) , in all the world, is a common cognomen. The family name Hiếu is habitual in Vietnam, where it is quite a common surname, Australia, where it is a very rare surname, and the United States, where it is an extremely rare surname. Likewise, Hiếu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Hiếu | Japan, China, Vietnam, Australia, United States |
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phạm phước hiếu gymnast, VN |
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| đặng văn hiếu VN (b. 1953) |
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| trung hiếu Vietnam actor, VN (b. 1973) |
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| ngô minh hiếu Vietnamese hacker, VN (b. 1989) |
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