Family name Dharmadasa (Dharmadasa 
) , worldwide, is a common cognomen. The family name Dharmadasa is characteristic of Sri Lanka, where it is quite a common surname, United Arab Emirates, where it is a rare surname, and Australia. Measured by absolute frequency, it is commonest in Sri Lanka, United Arab Emirates, and Indonesia. Much less frequently, Dharmadasa is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Dharmadasa | Australia, United Arab Emirates, India, Indonesia, Sri Lanka |
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chinthana dharmadasa Sri Lankan critic, film director, script writer, blogger, LK (b. 1976) |
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| dharmadasa walpola singer, LK (b. 1927) |
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| visaka dharmadasa Sri Lankan peace activist, LK (b. 1960) |
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| pradeepa dharmadasa Sri Lankan songstress and actress (b. 1963) |
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| i. m. dharmadasa British physicist |
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| dharmadasa wanniarachchi Sri Lankan governor, LK |
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| thanuja dharmadasa researcher |
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Mr, Upali, Manori, Mahesh, Migara, Sandun, Saliya, Sarath, Saroja, Shawna, Udesh, Shiela, Sudath, Senura, Senumi, Arosha, Athula, Aarthi, Chamal, Chamod, Baddra, Sunali, Bianca, Udani, Isuru, Ms, Uma, Kiri, Imyhamy, Upul, Malik, Sunil, Ashok, Asela, Udara, Akila, Kasun, Rohan, Ruwan, Dylan, Giyan, Thuli, Nalin, Nelum, Nuwan, Cyril, and Kushan