Goonetilleke () is a surname. Notable people with the surname include:
H. A. I. Goonetileke (1922–2003), Sri Lankan academic Mariazelle Goonetilleke (1958–2026), Sri Lankan singer and musician Oliver Goonetilleke (1892–1978), Sri Lankan statesman Roshan Goonetileke (born 1956), Sri Lankan Air Force officer, commander of the air force, marshal of the air force, chief of defence staff and governor Tharanga Goonetilleke (), Sri Lankan soprano opera singer William Alfred Goone-Tilleke (1860–1918), Ceylonese-Siamese lawyer, entrepreneur and aristocrat. His descendants use their surname as "Guna Tilaka" and "Khunadilok" ()
See also