Around the globe, Gunatillake (Gunatillake 
) is an extremely rare unknown gender forename. Much more prevalently, Gunatillake is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Gunatillake | New Zealand, United States, Australia, Sri Lanka, United Kingdom |
| pathiraja a gunatillake researcher |
|
|
| kumara keerthi gunatillake researcher (ORCID 0000-0001-8499-9648) |
|
Mr, Charaka, Ruchira, Dishani, Thanuja, Nadisha, Nirosha, Neelake, Hansika, Michelle, Samantha, Kanishka, Prasanna, Damindra, Lasantha, Narendra, Nilakshi, Udayanga, Suchith, Malkanthi, Samatha, Thilak, Ms, Lucy, Manel, Suren, Sunil, Supun, Kusum, Piumi, Rohan, Diana, Gayan, Anjana, Roshan, Damien, Donald, Gamini, Lalith, Harold, and Chathuranga