Cognomen Maduwantha (Maduwantha 
) , around the world, is quite a common family name. The last name Maduwantha is characteristic of 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. Very seldom, Maduwantha is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Maduwantha | Qatar, United Arab Emirates, South Korea, Sri Lanka, Kuwait |
| muditha maduwantha Sri Lankan cricketer (b. 1979) |
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| kaveendra maduwantha researcher |
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| harith maduwantha cricketer, LK (b. 1994) |
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| promod maduwantha Sri Lankan cricketer, LK (b. 1997) |
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Rey, Mahesh, Mudith, Saliya, Samada, Sajith, Shehan, Suresh, Subash, Sudath, Sudesh, Asanka, Chamod, Kosala, Keshan, Kushan, Pathum, Prasad, Pramod, Rasika, Roshan, Deshan, Malith, Dinesh, Ushan, Isuru, Manoj, Sanju, Sanka, Sahan, Supun, Amila, Ashan, Ashen, Asela, Ayesh, Kasun, Ruvin, Dasun, Dilan, Dulaj, Gayan, Gihan, Tharu, Niron, Nuwan, Ishan, Iresh, and Duresh