Cognomen Weerasooriya (Weerasooriya 
) , in the world, is a common last name. The cognomen Weerasooriya is characteristic of 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. In absolute terms, it most frequently occurs in Sri Lanka, Australia, and Indonesia.
| VARIANT | COUNTRY |
|---|---|
| Weerasooriya | Australia, United Arab Emirates, United States, Indonesia, Sri Lanka |
|
arnolis weerasooriya Colonel of the Salvation Army (b. 1854) |
|
| hubert weerasooriya Sri Lankan lawyer and author (b. 1916) |
|
|
| c. s. weerasooriya Sri Lankan general (b. 1943) |
|
|
| aruna weerasooriya botanist (b. 1962) |
|
|
| nayomini weerasooriya Sri Lankan journalist, entrepreneur and writer (b. 1965) |
|
|
| nilusha weerasooriya researcher |
|
|
| gayani weerasooriya researcher |
|
|
| rukshen weerasooriya researcher |
|
|
| nayana weerasooriya researcher (ORCID 0000-0003-2907-4380) |
|
|
| n. e. weerasooriya Sri Lankan lawyer |
|
Mr, Sunil, Senal, Anura, Anoja, Aruna, Amila, Amith, Ashen, Asiri, Asela, Asoka, Akila, Ajith, A N C, Chuck, Kasun, Kayla, Kelum, Kevin, Sachi, Sahan, Samal, Saman, Wa, K G, Raz, Dil, Don, Lyn, Eng, Maya, Mike, Puraj, Sabu, Anil, Ravi, Dale, Daya, Tula, Evan, Udul, Mohan, Sarth, Siri, and Rupun