<p>This study explores the effect of incorporating nanofillers such as halloysite nanotubes (HNTs), graphene oxide (GO), and carbon nanotubes (CNTs) on the performance of chloroprene rubber (CR)/natural rubber (NR) blends. The investigation focused on curing behavior, mechanical properties, compression set, swelling resistance, and abrasion resistance. Composites were prepared using a two-roll mill, and their mechanical properties were evaluated in terms of tensile strength (TS), 100% modulus (M100), hardness, elongation at break (EB), tear strength (TAS), and rebound resilience (RR). Curing studies revealed that nanofiller addition accelerated vulcanization and increased torque values, indicating higher crosslinking density. TS and M100 improved with filler content up to 6&#xa0;phr, but declined at higher loadings, while EB and RR decreased progressively. In contrast, hardness, TAS, and compression set increased consistently with nanofiller addition. Among the fillers, CNT-reinforced composites demonstrated the most significant reinforcement, with improvements of 60% in TS, 52% in M100, and 62% in TAS, though EB and RR decreased by 32 and 37%, respectively. GO-filled composites showed increases of 47% in TS, 47% in M100, and 55% in TAS, accompanied by reductions of 29% in EB and 25% in RR. HNT-reinforced composites exhibited 39% higher TS, 42% higher M100, and 50% higher TAS, but EB and RR decreased by 16 and 20%, respectively.</p>