Cognomen Alahakoon (Alahakoon 
) , around the world, is a common last name. The last name Alahakoon is habitual in 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. Not in comparison with a country's population, it most frequently occurs in Sri Lanka, United Arab Emirates, and Indonesia. Much less frequently, Alahakoon is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Alahakoon | Indonesia, Saudi Arabia, United Arab Emirates, Sri Lanka, Australia |
|
isuru alahakoon chess player (b. 1987) |
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| sujatha alahakoon politician, LK (b. 1959) |
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| thushari i alahakoon researcher |
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| damminda alahakoon cognitive computing researcher |
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Mr, Amber, Ashen, Akila, Ajith, Kasun, Krish, Pasan, Punya, Pumal, Ranga, Rohan, Ruwan, Danny, Gayan, Lorna, Taffy, Nadya, Nadun, Nalin, Nilan, Nipun, Amila, Nihal, Amali, Aruna, Don, Lal, Alex, Alay, Kasu, Ryan, Daya, Tara, Nath, Omal, Mable, Saman, Sahan, Shaki, Sunil, Sugat, Sonia, Srima, Anton, Anura, Anoma, Aruni, and Nuwan