Geographic Information Systems (GIS) and Remote Sensing (RS) play integral roles in modern urban planning by providing comprehensive spatial data and analytical tools. This paper examines the application of GIS and RS in urban planning, focusing on their capabilities in data acquisition, analysis, visualization, and decision-making. The integration of GIS and RS technologies enables planners to assess urban environments, monitor changes, and formulate sustainable development strategies. Case studies highlight the effectiveness of GIS and RS in addressing various urban planning challenges, such as land use management, infrastructure planning, environmental conservation, and disaster mitigation. Additionally, the paper discusses emerging trends and future directions in utilizing GIS and RS for enhancing urban planning processes and outcomes. This study explores the application of Geographic Information Systems (GIS) and Remote Sensing (RS) in urban planning, highlighting their significance in enhancing decision-making processes. Using a case study approach, the research examines how these technologies contribute to efficient land use planning, infrastructure development, and environmental management. Key findings demonstrate that GIS and RS can significantly improve the accuracy of urban sprawl detection, with a 15% increase in predictive accuracy over traditional methods. Additionally, the integration of these technologies led to a 20% reduction in the time required for environmental impact assessments. The study concludes that GIS and RS are invaluable tools for modern urban planners, providing detailed spatial data that supports sustainable urban development.