Family name Silalahi (Silalahi 
) , around the world, is a common cognomen. The surname Silalahi is habitual in South-eastern Asia, particularly Indonesia, where it is quite a common surname, Malaysia, where it is quite a rare surname, and Singapore, where it is a rare surname. Not in comparison with a country's population, it most frequently occurs in Indonesia, Malaysia, and the United States.
| VARIANT | COUNTRY |
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| Silalahi | Australia, Malaysia, Indonesia, United States, Singapore |
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t.b. silalahi ID (b. 1938) |
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sudi silalahi Indonesian politician, ID (b. 1949) |
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rosiana silalahi Indonesian news presenter, ID (b. 1972) |
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| f. sahala silalahi Indonesian politician (born 1951 in P. Samosir), ID (b. 1951) |
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| firmauli silalahi Indonesian politician (born 1954 in Tapanuli), ID (b. 1954) |
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| netty farida silalahi Indonesian politician (born 1956 in Medan), ID (b. 1956) |
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| bosmen halomoan silalahi Indonesian politician (born 1957 in Sumbul), ID (b. 1957) |
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| wesly silalahi Indonesian politician (born 1959), ID (b. 1959) |
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| erwin ricardo silalahi Indonesian politician (born 1964), ID (b. 1964) |
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| amin silalahi Indonesian politician (born 1967 in Seilebah), ID (b. 1967) |
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| hans h. silalahi Indonesian politician (born 1967 in Jakarta), ID (b. 1967) |
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| fritz horas silalahi ID (b. 1958) |
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| richard silalahi ID (b. 1959) |
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| maringan silalahi ID (b. 1960) |
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| hebbin silalahi ID (b. 1961) |
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