Globally, Jayantha (Jayantha 
) is quite a common primarily male, but scarcely girly forename. The given name Jayantha is habitual in Sri Lanka, where it is quite a common primarily male, but very infrequently feminine name, Qatar, where it is quite a rare boy's name, and Kuwait, where it is quite a rare largely masculine, but uncommonly feminine name. Measured by absolute frequency, it most frequently occurs in Sri Lanka, India, and Saudi Arabia. Much less frequently, Jayantha is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Jayantha | Qatar, Saudi Arabia, Sri Lanka, United Arab Emirates, India |
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jayantha kelegama Sri Lankan diplomat, LK (b. 1928) |
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jayantha dhanapala Sri Lankan diplomat, LK (b. 1938) |
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jayantha perera (b. 1957) |
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jayantha ketagoda Sri Lankan politician, LK |
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| jayantha paranathala Sri Lankan cricketer, LK (b. 1950) |
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| jayantha chandrasiri Sri Lankan film director, LK (b. 1959) |
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| jayantha weerasinghe (b. 1950) |
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| jayantha rathnayake Sri Lankan musician (1969–2020), LK (b. 1968) |
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| jayantha wickramarathne Sri Lankan police officer |
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| jayantha rajapakse researcher (computer science & information technology) |
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| jayantha neel senadheera Ph.D. University of North Texas 2014 |
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| jayantha wijesekara Sri Lankan politician, LK |
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| jayantha lanel gan hewage Ph.D. Oakland University 2009 |
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| jayantha c herath researcher (ORCID 0000-0002-1329-4824) |
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| jayantha gunaratne researcher |
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Rao, Weerakoon, Munasinghe, Samarakoon, Senarathna, Senanayake, Ramalingam, Rajapaksha, Rathnayake, Rathnayaka, Rupasinghe, Jayasinghe, Jayasuriya, Wijesinghe, Dissanayake, Dharmaratne, Nanayakkara, Weerasinghe, Weerasekara, Samarasinghe, Pushpakumara, Narendradhipa, Ekanayaka, Hettiarachchi, Gunaratne, Rajapakse, Das, Silva, Kumar, Edwin, Mendis, Shetty, Kumara, Kumari, Perera, Peiris, Rohana, Gamage, Herath, Bandara, Poojary, Fonseka, Liyanage, Fernando, Abeyrathna, Pathirana, Ranatunga, Ratnayake, and Wickramasinghe