This course on Slope Stability Analysis Using PLAXIS 2D equips geotechnical engineers, researchers, and students with both theory and practical modeling skills. It starts with slope stability fundamentals, failure types, and methods (Limit Equilibrium vs. Finite Element), then introduces PLAXIS 2D with constitutive models like Mohr-Coulomb, Hardening Soil, and Hoek-Brown. Key concepts include Factor of Safety (FoS), Shear Strength Reduction (SSR), and design guidelines (AASHTO, FHWA). Practical sessions cover embankments, excavations, layered soils, sands, and rock slopes, with advanced topics such as groundwater, rainfall, excavation effects, foundations, and tunnels. Reinforcement methods—geogrids, soil nailing, stone columns, grouting, micropiles, sheet piles, anchors are explored. The course concludes with dynamic analysis, earthquake loading, case studies, and best practices for PLAXIS modeling and reporting.