Around the globe, Alagu (Alagu 
) is quite a common principally male, but very seldom feminine first name. The forename Alagu is habitual in Singapore, where it is quite a rare predominantly male, but very infrequently feminine name, Qatar, where it is quite a rare male name, and United Arab Emirates. In absolute terms, this name is the most popular in India, Nigeria, and Saudi Arabia. Very seldom, Alagu is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Alagu | Saudi Arabia, United Arab Emirates, Malaysia, Nigeria, India |
| alagu subramaniam British Author (1910–1971) (b. 1915) |
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| alagu manickavelu researcher ORCID ID = 0000-0003-2875-2290 |
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Sah, Sundar, Selvam, Baitha, Bhagat, Kannan, Pandit, Paswan, Prasad, Thakur, Murugan, Sundari, Pandian, Lakshmi, Sundaram, Taniscody, Chaudhari, Karuppiah, Manikandan, Ramanathan, Lakshmanan, Muthiah Raman, Sharma, Subramanian, Mahato, Yadav, Pal, Ram, Raj, Ray, God, Vel, Mani, Miya, Saha, Sinh, Raja, Gond, Malai, Mahto, Meena, Muthu, Singh, Kumar, Pandi, Rajan, Durai, Manjhi, and Periyakaruppan