This document defines decentralization and discusses its various forms. Decentralization refers to restructuring governance so that authority is shared between central, regional and local levels of government according to the principle of subsidiarity. There are four main forms: devolution, delegation, deconcentration, and divestment/privatization. Devolution transfers the most authority to legally separate local governance bodies, while deconcentration transfers limited decision-making to regional offices under central control. The document also examines decentralization in Nepal, noting its inclusion in the 1991 constitution and its role in the Ninth Plan to promote rural development.