Family name Thilakarathne (Thilakarathne 
) , around the globe, is a common cognomen. The cognomen Thilakarathne 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, this name is the most popular in Sri Lanka, United Arab Emirates, and Japan. Much less frequently, Thilakarathne is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thilakarathne | United Arab Emirates, Japan, Indonesia, Sri Lanka, Qatar |
| smnk thilakarathne researcher |
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| dilhan jayantha thilakarathne Ph.D. Vrije Universiteit Amsterdam 2016 |
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| harshana thilakarathne Sri Lankan chess player, LK |
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Lal, Inoka, Isuru, Oshan, Warna, Yohan, Udeni, Udena, Malika, Malith, Malsha, Mahesh, Menaka, Sandun, Sajith, Shenal, Shehan, Shiran, Sisira, Sumith, Sumudu, Sudesh, Viraj, Sonali, Nuwan, Nipun, Amal, Sanje, Saman, Shani, Sunil, Supun, Anoma, Aruna, Amila, Amith, Ayoma, Kasun, Dasun, Dilan, Ganga, Gayan, Lucky, Navod, Nadee, Namal, Nalin, Nelka, and S M Dinitha Niraj