Cognomen Jayanth (Jayanth 
) , globally, is quite a rare surname. The surname Jayanth is habitual in Sri Lanka, where it is a rare surname, United Arab Emirates, and Kuwait. Measured by absolute frequency, it is commonest in India, Sri Lanka, and Indonesia. More frequently, Jayanth is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Jayanth | Sri Lanka, United States, South Africa, India, United Arab Emirates |
| prem jayanth Sri Lankan actor, LK (b. 1931) |
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meg jayanth British video game writer, GB (b. 1987) |
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| g r jayanth researcher |
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| thiruvellore thatai jayanth researcher ORCID ID = 0000-0002-3043-119X |
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| n. jayanth researcher |
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| namrata jayanth researcher |
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| mathew jayanth |
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Sai, Varma, Yadav, Murthy, Sharma, Shetty, Suresh, Challa, Ramesh, Naidu, Vemula, Avarur Sudheendra, Kashyap, Krishna, Prakash, Srinivas, Chowdary, Krishnan, Bharadwaj, Sridhar, Nayak, Gowda, Reddy, Ram, Raj, Rao, Jay, Jai, Babu, Bhat, Raju, Goud, Jayu, Jain, John, Nani, Nair, Naik, Singh, Katta, Kumar, Patel, Venkatesh, and Srinivasan