Cognomen Idika (Idika 
) , across the world, is quite a common last name. The surname Idika is habitual in Nigeria, where it is quite a rare surname, Tanzania, where it is a very rare surname, and Malaysia. Measured by absolute frequency, it is commonest in Nigeria, the United States, and Tanzania. Likewise, Idika is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Idika | United Kingdom, United States, Tanzania, Nigeria, India |
| ifeanyi idika Nigerian Managing Director, NG |
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| christiana idika DE (b. 1975) |
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