Cognomen Gunawardhana (Gunawardhana 
) , around the globe, is a common last name. The surname Gunawardhana is habitual in Sri Lanka, where it is quite a common surname, Qatar, where it is quite a rare surname, and United Arab Emirates, where it is a rare surname. Not in comparison with a country's population, it is the most numerous in Sri Lanka, United Arab Emirates, and Indonesia.
| VARIANT | COUNTRY |
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| Gunawardhana | Australia, United Arab Emirates, Indonesia, Sri Lanka, Qatar |
| theja gunawardhana (b. 1917) |
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| madusha l. p. gunawardhana researcher |
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| luminda niroshana gunawardhana researcher (ORCID 0000-0002-3617-5967) |
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| lhanoo gunawardhana researcher |
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| shamal m gunawardhana researcher (ORCID 0000-0002-0800-9371) |
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| turlough gunawardhana |
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| prishanta gunawardhana |
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| dilru gunawardhana Sri Lankan YouTuber, LK (b. 1995) |
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| jeewanthi gunawardhana rugby player (b. 1997) |
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Mr, Ruwan, Dilmi, Dulan, Gayan, Jesan, Tharu, Theja, Namal, Nalin, Piumi, Nihal, Hiran, Viraj, Frank, Inoka, Isuru, Upali, Malith, Mahesh, Menaka, Nuwan, Kasun, Chara, Ajith, Ms, Ama, Madu, Sama, Andy, Asha, Judy, Tina, Nimi, Hema, Manoj, Madhu, Sanka, Saman, Sahan, Anura, Amila, Asiri, Akila, Ayomi, Ayoma, Menuka, and Milani