Around the world, Khoo (Khoo 
, خو 
, クー 
) is quite a common unisex first name. The forename Khoo is habitual in Singapore, where it is quite a rare unisex name, Malaysia, and Tunisia, where it is a rare girly name. Not in comparison with a country's population, it most frequently occurs in Malaysia, China, and Singapore. Likewise, Khoo is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Khoo | Singapore, Malaysia, Taiwan, Australia, Indonesia |
| خو | Egypt, Tunisia, Iran, Algeria, Morocco |
| クー | Japan |
| Ку | Kazakhstan, Russia, Kyrgyzstan, China, Ukraine |
Khoo is also a name for the fictitious and mythical characters: .
| ulian khoo badminton player, CN (b. 1912) |
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| kah lin khoo b.18 December 1938 d.7 November 2014 (b. 1938) |
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| seow hwa khoo master calligrapher, scholar and teacher, SG (b. 1946) |
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| mavin khoo dancer, MY (b. 1976) |
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| teng lek khoo nuclear physicist at Argonne National Lab |
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| lee seng khoo researcher |
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| teng cheng khoo researcher (ORCID 0000-0001-8530-5644) |
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| sok kean khoo researcher |
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| siek toon khoo quantitative methodologist |
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| lay see khoo researcher ORCID ID = 0000-0003-4645-5185 |
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| hau wei khoo researcher |
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| chun yuan khoo researcher (ORCID 0000-0001-6558-1182) |
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| chin meng khoo researcher ORCID 0000-0003-1601-2391 |
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| keng sang khoo Ph.D. University of Kent, Canterbury 1995 |
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| kuan shiong khoo researcher |
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