All over the world, Hiệu (Hiệu 
, Хьеу 
) is a rare male given name. The forename Hiệu is characteristic of South-eastern Asia, particularly Vietnam, where it is a rare boy's name. Likewise, Hiệu is the last name as well as the forename.
| trần nhật hiệu (b. 1225) |
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nguyễn văn hiệu Vietnamese physicist and theoretical physicist, VN (b. 1938) |
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nguyễn huy hiệu North Vietnamese general, VN (b. 1947) |
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| tô hiệu VN (b. 1912) |
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| trần hiệu VN (b. 1914) |
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