Family name Kaku (Kaku 
, カク , كاكو 
, among others...) , across the world, is a common surname. The surname Kaku is habitual in Ghana, where it is quite a rare surname, Papua New Guinea, and Oman. Not in comparison with a country's population, it most frequently occurs in India, Nigeria, and Ghana. Also, Kaku is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kaku | Nigeria, Japan, Ghana, India, Bangladesh |
| カク | Japan |
| كاكو | Egypt, Sudan, Iraq, Algeria, Iran |
| Каку | Kazakhstan, Russia |
| קאקו | Israel |
|
michio kaku American theoretical physicist, futurist and author, US (b. 1947) |
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| shūichi kaku JP (b. 1931) |
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| nan'en kaku (b. 1962) |
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| blessing kaku footballer, NG (b. 1978) |
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| yasuyuki kaku researcher |
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| nobuhiro kaku researcher |
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| yoshio kaku researcher (ORCID 0000-0002-0748-6934) |
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| kaku mitsuo researcher (ORCID 0000-0002-3714-8100) |
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| shigeru kaku researcher (ORCID 0000-0002-0527-2465) |
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| hanae kaku researcher |
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| ken kaku researcher (ORCID 0000-0003-0258-2078) |
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| yuji kaku researcher |
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| masaru kaku researcher |
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| yo kaku researcher |
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| noriyuki kaku researcher |
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