Family name Sandaruwan (Sandaruwan 
) , in the world, is a common last name. The last name Sandaruwan is characteristic of Sri Lanka, where it is a common surname, Maldives, where it is quite a rare surname, and Qatar. In absolute terms, it most frequently occurs in Sri Lanka, United Arab Emirates, and South Korea. Very seldom, Sandaruwan is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Sandaruwan | Saudi Arabia, Qatar, United Arab Emirates, South Korea, Sri Lanka |
| chanaka sandaruwan researcher |
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| w.m.j. sandaruwan Sri Lankan herpetologist, LK |
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| amila sandaruwan Sri Lankan cricketer (b. 1984) |
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| lahiru sandaruwan cricketer, LK (b. 1991) |
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| ravija sandaruwan Sri Lankan cricketer who plays for Kuwait, LK (b. 1992) |
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| danushka sandaruwan Sri Lankan cricketer (b. 1993) |
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| ishara sandaruwan (b. 1994) |
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Ami, Kasun, Kavin, Kelum, Kusal, Pasan, Pamal, Piyal, Purna, Kalpa, Ranga, Dilan, Dilip, Dilum, Dulaj, Gayan, Gihan, Namal, Nalin, Dasun, Kalum, Ayesh, Akila, Don, Madu, Amal, Neil, Upul, Manoj, Malik, Milan, Sanka, Sahan, Sajun, Supun, Aruna, Amila, Amith, Ashan, Ashen, Asiri, Asela, Nisal, and Nipun