Purpose. This study develops and substantiates an organizational and economic mechanism for public investment aimed at ensuring balanced regional development in Ukraine, taking into account the institutional, financial, and administrative constraints affecting investment management at the regional and local levels, as well as the influence of wartime risks and post-war recovery needs on regional investment policy. Methodology. The study employs a combination of general scientific and specific methods. Theoretical generalization and systematization are used to reveal the conceptual foundations of public investment on the basis of domestic and foreign scientific literature. A systemic and structural-logical approach underpins the construction of the mechanism’s structural model, comprising organizational and economic components. Comparative analysis is applied to distinguish the established system of public investment management at the central level of governance from the underdeveloped system at the regional and local levels, and to identify the changes required to extend the mechanism to the subnational level. Institutional-legal analysis is used to examine the regulatory framework governing public investment in Ukraine, while the abstract-logical method underlies the formulation of conclusions and directions for further research. Findings. The results demonstrate that the effectiveness of public investment management is shaped by a complex interaction of institutional, financial, and administrative factors. In particular, the study highlights that, while a coherent institutional and legal framework for public investment has been established at the central level of governance, no comparable system currently exists at the regional and local levels, which limits the capacity of territories to implement strategic projects, develop infrastructure, and attract private capital. Key constraints identified include organizational shortcomings, limited financial resources, insufficient procedural transparency, and a shortage of qualified personnel. Based on the integration of institutional and structural analysis, a two-block model for the organizational and economic mechanism of public investment development — comprising an organizational block (management, institutional capacity, strategic planning, digitalization) and an economic block (diversified funding sources, public-private partnerships, financial incentives) — is proposed. It is shown that public investment projects contribute to infrastructure development, job creation, improved quality of life, and reduced migration, while also stimulating innovation, economic modernization, and a favorable regional investment climate. Originality. The originality of the study lies in the development of an integrated structural model of the organizational and economic mechanism of public investment, adapted to the conditions of wartime and post-war recovery, that for the first time combines organizational and economic components specifically at the subnational level, where a coherent management system has not yet been established. Practical Value. The proposed mechanism can be used by central and regional/local authorities to build the institutional and legal architecture for public investment management, establish regional and local investment councils, develop public-private partnership mechanisms, create investment passports and databases of ready-to-implement projects, and design monitoring and evaluation systems (KPIs) for public investment project effectiveness in the context of economic transformation and post-war recovery. 

public investment, regional development, balanced development, investment policy, public investment management, regional economy, organizational and economic mechanism, public-private partnership, institutional capacity, regional policy, post-war recovery 

The article explores the modernization of public investment mechanisms in the context of balanced regional socio-economic development in Ukraine. The relevance of the study is conditioned by Ukraine’s urgent needs for post-war recovery, digital transformation of public governance, and the implementation of the 2024–2028 Roadmap for Public Investment Management Reform approved by the Government of Ukraine. The study outlines key systemic deficiencies that hinder effective public investment, such as the absence of a unified long-term investment strategy, weak coordination between central and local authorities, insufficient alignment with national development goals, institutional fragmentation, and lack of transparency. The paper emphasizes the necessity of strategic planning, digitalization, interinstitutional coordination, and the engagement of private and international financing to enhance investment efficiency and impact. Special attention is devoted to the role of simulation and analytical tools that can support evidence-based investment planning and project evaluation. The need to create a digital investment architecture - including platforms such as DREAM - is recognized as a key driver for improving transparency, monitoring, and control of public investment flows. The findings suggest that the modernization of Ukraine’s public investment system should rest on four strategic pillars: development of a long-term strategic planning framework, institutional reform and capacity building, full digitalization of investment procedures, and mobilization of private and international co-financing. Enhancing the transparency and effectiveness of public investments will not only accelerate regional recovery and modernization but also foster investor confidence and long-term development resilience. The study provides a conceptual basis for the formulation of targeted policy instruments aimed at strengthening the regional investment ecosystem and supporting Ukraine’s transition to a sustainable, inclusive, and innovation-driven development trajectory. 

public investment, regional development, strategic planning, institutional capacity, digitalization, public-private partnership, budget financing, socio-economic balance, investment policy, infrastructure projects