Worldwide, 성덕 (성덕 
, Sung-Duk, Seong-Deok) is a rare male forename. The forename 성덕 is characteristic of Eastern Asia, particularly South Korea, where it is quite a rare masculine name.
| 오성덕 KR (b. 1911) |
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| 권성덕 South Korean film actor, KR (b. 1940) |
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| 홍성덕 South Korean film actor, KR (b. 1967) |
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| 배성덕 South Korean sports shooter, KR (b. 1970) |
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| 김성덕 North Korean general, KP |
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| 최성덕 South Korean rugby sevens player, KR (b. 1999) |
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