Cognomen Ilangantileke (Ilangantileke 
) , in all the world, is a rare family name. The surname Ilangantileke is characteristic of Sri Lanka, where it is a rare surname, the United Kingdom, where it is an extremely rare surname, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Ilangantileke | United States, Sri Lanka, United Kingdom |
| j. h. ilangantileke A Colonial-era Ceylonese politician |
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