Family name Damitha (Damitha 
) , in all the world, is a rare cognomen. The surname Damitha is habitual in Sri Lanka, where it is quite a rare surname, and the United States, where it is an extremely rare surname. More frequently, Damitha is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Damitha | Australia, United Arab Emirates, India, Indonesia, Sri Lanka |
Yapa, Abeywardana, Kulathunga, Ramanayake, Ranasinghe, Ranathunga, Rathnayake, Rupasinghe, Gunasekera, Jayasinghe, Jayarathna, Wijerathna, Amarasinghe, Chathuranga, Kariyawasam, Karunaratne, Gunawardana, Gunawardena, Liyanaarachchi, Jayasundara, Jayawardena, Weerasinghe, Samarathunga, Hettiarachchi, Sandaruwan, Wijeyawardana, Silva, Alwis, Gomez, Perera, Peiris, Prasad, Gamage, Herath, Bandara, Kalhara, Dimiyawa, Hanidar, Ukuwela, Karawita, Liyanage, Fernando, Ranaweera, Ratnayake, Dananjaya, Ekanayake, Wijeratne, Wimalasooriya, and Wickramasinghe