Surname Koh (Koh 
, コー 
, Ко 
) , in all the world, is a widespread cognomen. The last name Koh is characteristic of South-eastern Asia, particularly Singapore, where it is a widespread surname, Brunei, where it is a common surname, and Malaysia, where it is quite a common surname (explore the name in all countries). Measured by absolute frequency, it is the most numerous in South-eastern Asia, particularly Singapore, Malaysia, and Indonesia. Also, Koh is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Koh | Malaysia, Mexico, Indonesia, Singapore, Taiwan |
| コー | Japan |
| Ко | Azerbaijan, Kazakhstan, Kyrgyzstan, Russia, Uzbekistan |
| เกาะ | Thailand |
Cao, Chee, Chui, Cổ, Gao, Go, Goh, Gu, Gāo, Gŭ, Heo, Heoi, Her, Ho, Hoi, Hooi, Hsu, Hsü, Huh, Hui, Hur, Hŏ, Hứa, Kach, Kao, Khaw, Khoh, Khoo, Khor, Ko, Kohh, Koo, Ku, Kuo, Kô, Kôh, Kō, Su, Sü, Tsui, Xu, Xǔ, Гао, Ког, Коо, Коу, Кох, Су, Сюй, Хо, גאו, קוה, קוח, שו, قاو, هوه, กอฮอ, คอห์, โกห์, โคห์, โคฮ์, គះ, こう, コ, ホ, 古, 古氏, 幸, 徐, 神, 胥, 荒, 許, 许, 许氏, 辜, 高, 髙, 고, and 허
| adelheid koh holocaust victim, b. 1863-05-06, CZ (b. 1863) |
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| samuel koh holocaust victim, b. 1864-07-27, CZ (b. 1864) |
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| bertha koh holocaust victim, b. 1865-09-10, DE (b. 1865) |
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| helene koh holocaust victim, b. 1865-05-05, CZ (b. 1865) |
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| siegfried koh holocaust victim, b. 1871-02-13, DE (b. 1871) |
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| gloria koh holocaust victim, b. 1872-04-27 (b. 1872) |
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| paula koh holocaust victim, b. 1872-08-17, CZ (b. 1872) |
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| salomon koh holocaust victim, b. 1873-12-13, CZ (b. 1873) |
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| salomon koh holocaust victim, b. 1876-03-11 (b. 1876) |
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tommy koh Singaporean diplomat and lawyer, SG (b. 1937) |
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koh tsu koon former Chief Minister of Penang, MY (b. 1949) |
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howard koh American physician, US (b. 1952) |
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harold hongju koh American lawyer, US (b. 1954) |
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| koh cheng moh badminton player, SG (b. 1905) |
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| koh beng swee badminton player, SG (b. 1905) |
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