Cognomen Suriyaarachchi (Suriyaarachchi 
) , worldwide, is quite a rare surname. The last name Suriyaarachchi is habitual in Sri Lanka, where it is quite a common surname, Australia, where it is a very rare surname, and Canada. Measured by absolute frequency, it most frequently occurs in Sri Lanka, Australia, and the United States.
| VARIANT | COUNTRY |
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| Suriyaarachchi | United Kingdom, Sri Lanka, Australia, United States, France |
| c. a. suriyaarachchi Sri Lankan Politician. Member Of Parliament For Polonnaruwa District, LK (b. 1953) |
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| devinda suriyaarachchi researcher |
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| pushpa suriyaarachchi researcher |
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Mr, Lakmal, Erandi, Harsha, Vasana, Wasana, Samitha, Sujeewa, Pandula, Rajeewa, Dinula, Rashini, Roshini, Lochana, Nandana, Harindi, Hasitha, Mubalige, Praneeth, Ranganie, Danushka, Rashika, Deepal, Rasika, Rasara, Don, Anya, Ravi, Pasan, Rohan, Ruwan, Navin, Nalin, Nisal, Nuwan, Udana, Maduri, Monica, Methma, Sandya, Sarath, Sheran, Supuni, Senaka, Kanthi, Kumudu, Tharindu, and Thrilakshi