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Across the world, Kaku (Kaku
, カク
, كاكو
, among others...) is a common unisex first name. The forename Kaku is habitual in India, where it is quite a rare gender-neutral name, Nigeria, where it is quite a rare mostly masculine, but uncommonly female name, and Oman, where it is a rare male name. Measured by absolute frequency, it is the most numerous in India, Nigeria, and Indonesia. Likewise, Kaku is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Kaku | Bangladesh, India, Japan, Nigeria, Ghana |
| カク | Japan |
| كاكو | Iraq, Egypt, Sudan, Iran, Algeria |
| Каку | Kazakhstan, Russia |
| קאקו | Israel |
Kaku is also a name for the fictitious and mythical characters: Kaku , the fictional character from One Piece.