Sinhalese Buddhist nationalism is a political ideology which combines a focus upon Sinhalese culture and ethnicity with an emphasis upon Theravada Buddhism, which is the majority belief system of most of the Sinhalese in Sri Lanka. It mostly originated in reaction to the colonisation of Sri Lanka by the British Empire and became increasingly assertive in the years following the independence of the country.
Anagarika Dharmapala was one of the leading contributors to the Buddhist revival of the 19th century that led to the creation of Buddhist institutions and Buddhist schools to match those of the Christian missionaries, and to the independence movement of the 20th century. He illustrated the first three points in a public speech:
He called upon the Sinhalese people to rise. He strongly protested consumption of alcohol, killing of cattle and promoted vegetarianism .
Sinhalese Buddhist nationalism has a fractious relationship with other religious communities like Christians, with protests often being organised by Buddhist nationalist organisations against Christians in the governance of the country through movements like Catholic Action. Relations between Buddhist nationalists and Hindus are more peaceful and friendly, with numerous Hindu figures, including Kandiah Neelakandan and T. Maheswaran working with Buddhist groups on the anti-Conversion bill. Also, D. B. S. Jeyaraj noted that both Sri Lankan Hindu nationalism and Buddhist nationalism rose as reactions to Christianity. Hindu-Buddhist collaboration is growing more prevalent in Sri Lanka, with the rise of groups such as the Hindu-Buddhist Friendship Society.