Soil fertility plays a crucial role in determining agricultural productivity and long-term sustainability, especially in semi-arid regions. This study focuses on examining the spatial variability of soil fertility in Karjat Taluka of Ahilyanagar District using Geographic Information System (GIS) techniques. The region is affected by challenges such as irregular rainfall, soil degradation, and uneven distribution of nutrients. By integrating soil sample data with secondary sources and GIS tools, key fertility indicators such as nitrogen (N), phosphorus (P), potassium (K), and organic carbon were mapped and analyzed. The findings indicate considerable spatial variation in soil fertility, with some areas experiencing nutrient deficiencies while others maintain moderate fertility levels. The study demonstrates the effectiveness of GIS in identifying fertility zones and supports site-specific nutrient management for sustainable agricultural development.