Cognomen Dilki (Dilki 
) , globally, is a rare family name. The surname Dilki is habitual in Sri Lanka, where it is quite a rare surname, Kuwait, where it is a rare surname, and Jordan. In absolute terms, it is the most numerous in Sri Lanka, Turkey, and Germany. More frequently, Dilki is the forename as well as the last name.
Kui, Withana, Wijesena, Sewwandi, Ahangama, Lakshani, Thushara, Fernando, Matharage, Madushani, Madushika, Kandanarachchi, Nisansala, Maduwanthi, Ranasinghe, Rajapaksha, Rathnayake, Rathnayaka, Jayasinghe, Wijewardena, Gunawardena, Weerasinghe, Hemaram, Mallikarachchi, Hansada, Nishadi, Dil, Madu, Devi, Mandi, Murmu, Silva, Sajani, Sonali, Apsara, Kumari, Perera, Peiris, Gamage, Ishara, Wasana, Shanika, Adikari, Charuni, Tharaka, Tulette, Nilaweera, Nimesha, and Hettiarachchi