Surname Buddhadasa (Buddhadasa 
) , all around the world, is quite a rare last name. The family name Buddhadasa is habitual in Sri Lanka, where it is quite a rare surname, Australia, where it is a very rare surname, and Canada.
| VARIANT | COUNTRY |
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| Buddhadasa | United Kingdom, Sri Lanka, Australia, United States, Canada |
| buddhadasa vithanarachchi Sri Lankan actor, LK (b. 1947) |
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| buddhadasa of anuradhapura king of Anuradhapura |
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| aththintha marakalage buddhadasa Sri Lankan politician, LK |
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| buddhadasa p. kirthisinghe |
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Saman, Salwathura Acharige, Santhiyapu, Harshakumar, Christina, Chamalika, Buwaneka, Chameera, Kumudika, Sahanya, Salwathura Archarige, Mallika, Harsha, Lalith, Pushpa, Andrea, Shyama, Sarath, Nelum, Leena, Brian, Manjula, and Hettikankanange Darshana