  This paper aims to study the impact of public and private investments on the
economic growth of developing countries. The study uses the panel data of 39
developing countries covering the periods 1990-2019. The study was based on the
neoclassical growth models or exogenous growth models state in which land,
labor, capital accumulation, etc., and technology proved substantial for
economic growth. The paper finds that public investment has a strong positive
impact on economic growth than private investment. Gross capital formation,
labor growth, and government final consumption expenditure were found
significant in explaining the economic growth. Overall, both public and private
investments are substantial for the economic growth and development of
developing countries.
