The Self-Respect Movement is a popular human rights movement originating in South India aimed at achieving social equality for those oppressed by the Indian caste system, advocating for lower castes to develop self-respect. It was founded in 1925 by S. Ramanathan who invited E. V. Ramasamy to head the movement in Tamil Nadu, India against Brahminism. The movement was extremely influential not just in Tamil Nadu, but also overseas in countries with large Tamil populations, such as Sri Lanka, Burma, Malaysia and Singapore. Among Singapore Indians, groups like the Tamil Reform Association, and leaders such as Thamizhavel G. Sarangapani were prominent in promoting the principles of the Self-Respect Movement among the local Tamil population through schools and publications.

Erode Venkatappa Ramasamy, revered by his followers as Periyar or Thanthai Periyar, was an Indian social activist and politician who started the Self-Respect Movement and Dravidar Kazhagam. He is known as the 'Father of the Dravidian movement'. He rebelled against Brahmin dominance and gender and caste inequality in Tamil Nadu. Since 2021, the Indian state of Tamil Nadu celebrates his birth anniversary as 'Social Justice Day'.