In this study, organo-modified layered double hydroxides (LDH) as nanoparticle were used to prepare hybrid nanocomposites based on polypropylene (PP), ethylene vinyl acetate copolymer (EVA) blend in presence of a maleated polypropylene (PP-g-MA) as compatibilizer via a one-step melt mixing process. Transmittance electron microscopy (TEM) was employed to determine the place of LDH nanoparticles in polymer blend nanocomposites. Microstructures of hybrid nanocomposites were studied by means of scanning electron microscopy (SEM). Thermomechanical properties of nanocomposites were investigated by dynamic mechanical thermal analysis (DMTA). Differential scanning calorimeter (DSC) and thermo gravimetric analysis (TGA) were also used to investigate crystallization behavior and degradation process of nanocomposites, respectively. The results showed that, LDH nanoparticles in the exfoliated and/or intercalated states preferred to localize in the EVA phase. The average particles size of EVA domains was reduced in presence of LDH and PP-g-MA. The storage modulus of nanocomposites was controlled by combination of LDH and PP-g-MA. The crystallization studies revealed that 5wt.% LDH and PP-g-MA increased crystallization temperature to 133.4oC while addition of LDH in absence of the compatibilizer decreased the crystallization temperature to 122.7oC. Investigation of thermal degradation behavior of samples indicated that presence of LDH and PP-g-MA in PP/EVA blends improved initial degradation temperature of nanocomposites up to 43% compared to the neat PP.