Family name Supun (Supun 
, สุบรรณ์ ) , in the world, is quite a common cognomen. The cognomen Supun is characteristic of Sri Lanka, where it is quite a common surname, Qatar, where it is quite a rare surname, and Kuwait, where it is a rare surname. Not in comparison with a country's population, the name is most common in Sri Lanka, Thailand, and Saudi Arabia. More prevalently, Supun is the forename as well as the last name.
Silva, Harshana, Fernando, Maduranga, Madusanka, Chinthaka, Pathirana, Lakshitha, Madushanka, Sandaruwan, Ranasinghe, Rathnayake, Gunasekara, Jayasinghe, Wijesinghe, Madhushanka, Amarasinghe, Chathuranga, Dissanayake, Dissanayaka, Nanayakkara, Weerasinghe, Tharanga, Hettiarachchi, Jayalath, Akalanka, Udara, Kumara, Perera, Peiris, Gamage, Lakmal, Herath, Sanjaya, Sampath, Sameera, Chanaka, Chamara, Bandara, Karnkla, Kavinda, Dilanka, Dilshan, Lakshan, Tharaka, Madushan, Sanjeewa, Liyanage, and Wickramasinghe