This study evaluates how particle shape affects the segregation behavior of binary mixtures in a rotating drum. The Discrete Element Method (DEM) is used to investigate radial segregation and its dependence on particle shape by varying the particle’s aspect ratio. Two scenarios are examined: one when the shape of fine particles held constant and varying shape for coarse particles, and another when the shape of coarse particles held constant and varying shape for fine particles. These scenarios help quantify the relative mixing observed in the system for the considered shapes. The SI trend in terms of aspect ratio (AR) for coarse particles is as follows: AR (5.0) > AR (2.5) > AR (1). In contrast, for fine particles, the trend is AR (5.0) > AR (1) > AR (2.5). The results indicate that coarse particles with lower packing density exhibit higher segregation. Conversely, fine particles with pronounced elongation facilitate mixing.