Polyamide 6 (PA6) is one of the most widely used polymers for engineering applications but it exhibits drawbacks such as high moisture absorption and brittleness which may limit its use. One way of minimizing such deficiencies may be the addition of a polyolefin. However, these blends often have lower mechanical properties than those of their components due to the poor compatibility between the components. In this way, a compatibilizing agent must be added to increase the interaction between the phases. One of the purposes of this work was to evaluate the use of maleic anhydride grafted linear low density polyethylene (LLDPE-g-MA) as a compatibilizing agent for PA6/linear low density polyethylene (LLDPE) blends. PA6/LLDPE/LLDPE-g-MA blends with 5, 25 and 45 wt% of LLDPE and 5 wt% of LLDPE-g-MA were prepared in a twin-screw extruder, (AXPlasticos, model AX16:40DR, L/D=40, D=16mm). The temperature profile was 200, 220, 220, 220, 230°C and the screw speed was set at 160 rpm. The extruded pellets were injected and molded to obtain specimens, using a Romi injection-molding machine. The blends were characterized by differential scanning calorimetry (DSC), Izod impact tests, and capillary rheometry. DSC results indicates that all PA6/LLDPE blends are immiscible and increasing the content of LLDPE in the blend increases the degree of crystallinity of the LLDPE phase while the degree of crystallinity of the PA6 phase remains unchanged. In addition, a substantial increase in impact strength occurs with increasing amount of LLDPE. Through the capillary rheometry analysis it was observed that increasing the LLDPE content, there is a proportional decrease in the viscosity of the blend and an increase in the flow behavior index (n). Thus, it can be concluded that the compatibilizing agent and the addition of LLDPE contribute to decrease the melt viscosity, to increase the degree of crystallinity of the LLDPE phase in the blend and to obtain better impact properties.