Social Watch-Tamilnadu (SW-TN) is a State-level Public Policy Research-cum-Advocacy Centre in the South Indian State of Tamilnadu.

Social Equity is the central concern of SW-TN. And the centre undertakes various research and advocacy initiatives, by interfacing with policy makers, social researchers and Human Rights-cum-grassroots movements in the State and outside, in its efforts to ensure Social Equity by linking public policy with livelihood rights of the socially marginalized sections in the State, such as Scheduled Castes, Scheduled Tribes, women and children.

SW-TN uses Budget Advocacy as a key instrument of monitoring Public Policy as well as of evolving Alternate Policy formulations. “Social Equity Budgeting” is the over-arching framework of SW-TN.