Localism describes a range of political philosophies which prioritize the local. Generally, localism supports local production and consumption of goods, local control of government, and promotion of local history, local culture and local identity. Localism can be contrasted with regionalism and centralized government, with its opposite being found in the unitary state.

Localism can also refer to a systematic approach to organizing a central government so that local autonomy is retained rather than following the usual pattern of government and political power becoming centralized over time.

On a conceptual level, there are important affinities between localism and deliberative democracy. This concerns mainly the democratic goal of engaging citizens in decisions that affect them. Consequently, localism will encourage stronger democratic and political participatory forums and widening public sphere connectivity.