Research Aims: This study evaluates the human development trajectory of Sudan, focusing on the Human Development Index (HDI), Gender Development Index (GDI), and Inequality-adjusted HDI (IHDI) from 1990 to 2022. It aims to identify progress and persistent challenges in health, education, and income. Methodology: Utilizing secondary data from international reports, this research conducts a quantitative and qualitative analysis of HDI, GDI, and IHDI values, examining trends and disparities over three decades. Research Findings: The HDI of Sudan increased from 0.322 in 1990 to 0.516 in 2022, yet the country remains in the 'Low' human development category, ranked 170 out of 193 countries. The IHDI shows a 35.9% reduction due to inequalities. The GDI value of 0.868 in 2022 reveals substantial gender disparities, with female HDI lagging behind male HDI. These findings highlight the uneven distribution of development benefits and ongoing challenges in achieving equitable human development. Contribution: This study enhances the understanding of human development in Sudan by providing a comprehensive analysis of HDI, GDI, and IHDI trends. It underscores the impact of inequalities and the importance of gender equality for sustainable progress. Policy Implications: Policymakers should focus on reducing inequalities and promoting gender equality through targeted healthcare, education, and economic policies to enhance human development outcomes. Research Limitations: The study relies on secondary data, which may not reflect the most recent realities. Future research could incorporate primary data for more up-to-date insights. Keywords: Sudan, Human Development, Gender Equality, Economic Development.