This study seeks to analyze the relationship between carbon dioxide emissions and Gross Domestic Product (GDP) in the Libyan economy over the period from 1990 to 2022. This analysis is conducted within the framework of the Environmental Kuznets Curve (EKC) hypothesis, which posits a non-linear inverted U-shaped relationship between GDP and carbon dioxide emissions. Employing a time series methodology, the study utilizes unit root tests (Augmented Dickey-Fuller and Zivot-Andrews) alongside the Gregory & Hansen cointegration test, which accounts for structural breaks within the time series data.The long-term relationship among the study variables is estimated using three advanced econometric techniques: Fully Modified Ordinary Least Squares (FMOLS), Dynamic Ordinary Least Squares (DOLS), and Cointegrated Regression (CCR). The findings reveal that all variables are integrated of order one, I(1), and indicate the presence of a long-term equilibrium relationship between carbon dioxide emissions and GDP in the Libyan economy. Moreover, the results demonstrate that the GDP coefficient is positive and statistically significant, while the squared GDP coefficient is negative, thereby substantiating the Environmental Kuznets Curve hypothesis.The findings further suggest that economic growth in Libya initially leads to increased emissions; however, it subsequently contributes to their reduction after a certain income threshold is reached. This implies that the relationship between the two variables adheres to an inverted U-shaped Kuznets curve. The study advocates for the formulation of integrated environmental and economic policies that facilitate the transition to a green economy, promote investment in clean energy sources, and incorporate environmental considerations into economic growth strategies. Such measures are essential for achieving a balanced approach between sustainable development and environmental conservation. ............................. Keywords:.......... Green economy, economic growth, Gross Domestic Product, carbon dioxide emissions, Environmental Kuznets Curve, time series.