Family name Udayanga (Udayanga 
) , globally, is a common last name. The surname Udayanga is habitual in Sri Lanka, where it is quite a common surname, Qatar, where it is quite a rare surname, and United Arab Emirates. Very seldom, Udayanga is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Udayanga | Saudi Arabia, United Arab Emirates, Indonesia, Sri Lanka, Qatar |
| dhanushka udayanga botanist |
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| lahiru udayanga researcher (ORCID 0000-0002-5687-989X) |
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| dhanushka udayanga mycologist |
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| isuru udayanga researcher (ORCID 0000-0002-8386-9320) |
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| dhanushka udayanga researcher ORCID ID = 0000-0002-3088-7752 |
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| imesh udayanga cricketer, LK (b. 1990) |
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| dulash udayanga Sri Lankan cricketer, LK (b. 1995) |
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