Around the globe, Thissa (Thissa 
) is a rare principally masculine, but very seldom feminine first name. The first name Thissa is characteristic of Qatar, where it is a rare male name, Sri Lanka, and Saudi Arabia. Much less frequently, Thissa is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Thissa | Qatar, Saudi Arabia, Sri Lanka, Kuwait, Myanmar |
| thissa n siriwardena researcher |
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| thissa karunarathna researcher |
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| thissa sanjeewa cricketer, LK (b. 1992) |
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Lal, Wijayananda, Kariyawasam, Wijesinghe, Nawarathna, Jayasuriya, Gunarathna, Gunasekara, Rajarathne, Rajanayake, Arachchige, Weerakoon, Withanage, Ekanayake, Gunaratne, Thambugala, Dijkhuis, Pinheiro, Labinte, Riddler, Bandara, Camelia, Farias, Lwinpyin, Perera, Kumara, Nobal, Costa, Yona, Igar, Karunarathna, and Wijayarathna