Review Paper on the Surname "Perera" – The Most Used Surname in Sri Lanka

Perera is the most common surname in Sri Lanka, despite being introduced by Portuguese colonisation centuries ago. The review investigates how Perera emerged in history together with its social impacts, geographical range, and linguistic background throughout time. This paper thoroughly examines Perera inside the Sri Lankan identity system by integrating historical evidence with linguistic data and population research. This review includes academic perspectives about surnames, colonial effects, and modern naming customs. The research paper outlines forthcoming investigation methods alongside the ethical aspects that should be addressed concerning surname heritance during future investigations.