Surname Diễm (Diễm 
) , in all the world, is a common last name. The cognomen Diễm is habitual in South-eastern Asia, particularly Vietnam, where it is quite a common surname. Much less frequently, Diễm is the forename as well as the last name.
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| Diễm | Malaysia, United States, Vietnam, China, Myanmar |
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bùi diễm Vietnamese diplomat, VN (b. 1923) |
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diễm my (b. 1990) |
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| diễm my VN (b. 1962) |
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| diễm my VN (b. 1962) |
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| ngọc diễm MISS TOURIST VIETNAM 2008, VN (b. 1987) |
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| phạm thị diễm Vietnamese high jumper, VN (b. 1990) |
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| diễm quỳnh VN |
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| bùi thị diễm VN (b. 1984) |
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