Purpose: This paper examines government Science, Technology and Innovation (STI) policy support for Grassroots Innovation (GRI) in the context of a developing country. Methodology: Drawing from existing literature and case studies from Nigeria, it critically analyses the roles that policies play in GRI. Findings: The findings reveal: 1. The need for improved conceptual clarity, that is, adistinction in GRI categories into: innovation from, for, at and by grassroots, as this enhances knowledge

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... cumulation 2. That traditional policy approaches in adequately support GRI and 3. The need for a re-evaluation of existing innovation policies and the development offrame works and policy instruments that support GRI. Value: Develops a conceptual framework, and suggest areas where policies could promote GRI activitiesfor example, in strengthening innovation capabilities, innovation ecosystems and actors, policy making, 11 C.U. Daniels SU D A N E S E DI A S P O R A 2015 12 stakeholder engagement, knowledge production and circulation and STI fundingthere by helping address societal challenges and contribute to sustainable socio-economic development.