Last name Ilangaratne (Ilangaratne 
) , in all the world, is a rare cognomen. The cognomen Ilangaratne is characteristic of Sri Lanka, where it is quite a rare surname, Australia, where it is a very rare surname, and the United Kingdom.
| VARIANT | COUNTRY |
|---|---|
| Ilangaratne | Australia, Sri Lanka, Canada, United Kingdom, United States |
| tamara kumari ilangaratne ceylonese politician (b. 1925) |
|
|
| hemish ilangaratne cricketer (born 1987), GB (b. 1987) |
|