Surname Hapuarachchi (Hapuarachchi 
) , globally, is a common last name. The surname Hapuarachchi is characteristic of Sri Lanka, where it is quite a common surname, Qatar, where it is a rare surname, and United Arab Emirates. Measured by absolute frequency, it is the most numerous in Sri Lanka, Indonesia, and United Arab Emirates.
| VARIANT | COUNTRY |
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| Hapuarachchi | Australia, Indonesia, Sri Lanka, United States, United Arab Emirates |
| harini pranami hapuarachchi researcher ORCID ID = 0000-0003-0668-4725 |
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| k. hapuarachchi botanist |
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| nihal hapuarachchi Sri Lankan general |
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| tharindi hapuarachchi researcher |
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| kamal hapuarachchi researcher |
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| sujeewa hapuarachchi Ph.D. University of Louisville 2017 |
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| hapuarachchige chanditha hapuarachchi researcher ORCID ID = 0000-0001-7079-8538 |
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Mr, Chanu, Kasun, Kelum, Pasan, Peter, Ranil, Demal, Diana, Gayan, Gihan, Jaime, Jerun, Jehan, Tudor, Tyron, Nadee, Nalin, Nimal, Nimna, Nihal, Neraj, Ajith, Himal, Akila, Asela, Don, Mali, Meng, Ryan, Dhan, Eric, Eran, Hart, Upul, Manoj, Mohan, Sarji, Saman, Shani, Sunil, Sucil, Anura, Amila, Ashya, Asiri, Asika, Asoka, and Isuru