Cognomen Zulkarnaini (Zulkarnaini 
) , throughout the world, is quite a rare surname. The cognomen Zulkarnaini is habitual in Malaysia, where it is a rare surname, Indonesia, and Nigeria. Also, Zulkarnaini is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Zulkarnaini | Nigeria, Brazil, Indonesia, United States, Malaysia |
| t. zulkarnaini Indonesian politician (born 1949 in Nagan Raya), ID (b. 1949) |
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| teuku zulkarnaini ID (b. 1949) |
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