Globally, Lahiru (Lahiru 
) is a common male forename. The first name Lahiru is habitual in Sri Lanka, where it is a common boy's name, Maldives, where it is quite a rare male name, and Qatar, where it is quite a rare predominantly masculine, but scarcely female name. Measured by absolute frequency, this name is the most popular in Sri Lanka, United Arab Emirates, and Qatar. Very seldom, Lahiru is the last name as well as the forename.
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| Lahiru | Saudi Arabia, Qatar, United Arab Emirates, Sri Lanka, Nigeria |
| lahiru katupitiya researcher |
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| lahiru sandaruwan galgamuwa researcher (ORCID 0000-0003-3014-338X) |
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| lahiru prabodha lande bandarage researcher |
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| lahiru s wijedasa researcher |
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| lahiru k abeykoon researcher |
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| lahiru udayanga researcher (ORCID 0000-0002-5687-989X) |
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| lahiru handunnetthi researcher |
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| lahiru gangoda researcher |
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| lahiru n wimalasena researcher |
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| lahiru silva Sri Lankan cricketer (b. 1981) |
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| lahiru mudalige Sri Lankan television journalist and actor (b. 1983) |
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| lahiru perera vocalist, LK (b. 1984) |
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| lahiru diyantha Sri Lankan cricketer (b. 1989) |
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| lahiru wijetunga Sri Lankan cricketer (b. 1989) |
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| lahiru sri lakmal cricketer, LK (b. 1989) |
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Dias, Madhushan, Maduranga, Madusanka, Sadaruwan, Dananjaya, Ekanayake, Madushanka, Munasinghe, Sandaruwan, Ranasinghe, Rajapaksha, Rathnayake, Rathnayaka, Dhananjaya, Gunasekara, Jayasinghe, Wijesinghe, Chathuranga, Kariyawasam, Dissanayake, Weerasinghe, Udayanga, Hettiarachchi, Fernando, Darshana, Silva, Udara, Kumara, Perera, Peiris, Prasad, Gamage, Lakmal, Sampath, Chamara, Bandara, Prabath, Rangana, Randika, Rukshan, Dilshan, Lakshan, Tharaka, Fonseka, Madushan, Prasanna, Liyanage, and Wickramasinghe