Red mud is a highly alkaline waste generated during aluminum extraction from its parent mineral (bauxite) via the Bayer process. This industrial waste is in the form of slurry which is disposed nearby in tailing ponds. This waste possesses major environmental concerns such as soil fertility and water contamination. The study analyzes red mud from Hindalco Industries, Muri, Jharkhand, to explore its geotechnical properties for sustainable reuse as construction material. Laboratory tests assessed parameters such as natural moisture content, pH, specific gravity, Atterberg’s limits, free swell index, compaction properties, and unconfined compressive strength. The results showed the pH and specific gravity of 11.58 and 3.01, respectively. As per Indian standard soil classification system, red mud ranged in the silt of intermediate compressible (MI) soil having moderate plasticity and MDD of 16.98 kN/m3 at OMC of 21.22%. In addition to that it showed a stable volume change by FSI as zero and unconfined compressive strength of 19.62 kN/m2 making it suitable for applications in soil stabilization, subgrade material, and brick production. Further chemical analysis indicated the presence of Fe, Al, and Si as major compounds and Na, Mg, Ti, P, K, and Mn as minor compounds. The study investigates the red mud to be reused as a construction material for sustainable application. Given the construction sector’s considerable appetite for materials and the chemical similarities between many waste products and construction materials, this industry emerges as an ideal candidate for large-scale solid waste reuse.