Last name Withanage (Withanage 
) , in the world, is a common family name. The cognomen Withanage is habitual in Sri Lanka, where it is quite a common surname, Maldives, where it is quite a rare surname, and Qatar. Measured by absolute frequency, it is commonest in Sri Lanka, Australia, and United Arab Emirates. Much less frequently, Withanage is the forename as well as the last name.
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| Withanage | Indonesia, Qatar, United Arab Emirates, Sri Lanka, Australia |
| hesha withanage politician in Sri Lanka (b. 1976) |
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| chanaka withanage Sri Lankan cricketer (b. 1976) |
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| withanage don duminda researcher (ORCID 0000-0002-9958-9534) |
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| chathura withanage researcher |
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| wenura withanage researcher |
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| lakruwan withanage filmmaker |
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| ankumbura withanage Sri Lankan politician |
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| kushantha p k withanage researcher |
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| niroshima dedunu withanage researcher (ORCID 0000-0002-4602-5006) |
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| niroshan nilmin kumara perera withanage Ph.D. University of Calgary 2013 |
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| madhura withanage |
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| deshan withanage cricketer, LK (b. 1997) |
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Mr, Supun, Anura, Anuja, Aruna, Amiru, Amila, Ashan, Asith, Asela, Akila, Ayoni, Ayomi, Ayoma, Ajith, Cpeng, Kamal, Kasun, Kelum, Kevin, Susil, Sunil, Shani, Sahan, Don, Lal, Vas, Madu, Moli, Sena, Anna, Anne, Amal, Pawan, Kara, Raki, Dona, Nilu, Neel, Omal, Manoj, Megha, Sandy, Saman, Rayo, and Ranga