Dhammika is both a given name and a surname. Notable people with the name include:
Dhammika Dasanayake, Sri Lankan civil servant Dhammika Dharmapala (born 1969/1970), Sri Lankan economist Dhammika Ganganath Dissanayake (1958–2020), Sri Lankan professor Dhammika Kitulgoda, Sri Lankan civil servant Dhammika Niroshana (1983–2024), Sri Lankan cricketer Dhammika Perera (born 1967), Sri Lankan billionaire businessman Dhammika Prasad (born 1983), Sri Lankan cricketer Dhammika Siriwardana (1954–2015), Sri Lankan film director Dhammika Sudarshana (born 1976), Sri Lankan cricketer Ranil Dhammika (born 1980), Sri Lankan cricketer Sriyani Dhammika Menike (born 1970), Sri Lankan middle-distance runner
See also Dhammika Sutta, sutta