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Globally, Siju (Siju
, 思菊
, 四菊
) is quite a common epicene first name. The given name Siju is habitual in Western Asia, particularly United Arab Emirates, where it is quite a rare male name, Oman, and Bahrain. In absolute terms, it is commonest in India, Nigeria, and China. Very seldom, Siju is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Siju | Saudi Arabia, India, Nigeria, United Arab Emirates, China |
| 四菊, 思菊 | China |
| Сию | Kazakhstan, Kyrgyzstan, Russia |