In both Finland and Sweden, decentralisation has traditionally been an essential cultural policy aim. This article explores how, by pursuing decentralisation, the regional jurisdictions have been presented with more possibilities to fulfil their purposes and in this way, gain legitimacy in cultural policy. Based on the analysis of political, legal, and administrative documents, three main periods of regional decentralisation in cultural policies are identified: regions as vehicles of welfare policy, regionalisation, and competitive regions. In both countries, national governments have promoted the regional level’s agency, and in doing so, potential institutional change in cultural policy. However, the increase of the regional level’s role has been limited by the countries’ strongly institutionalised cultural policy systems.