The present paper summarizes an experimental study on the molten viscoelastic behavior of HDPE / jute composites under steady and dynamic mode. Variations of the melt viscosity and die swell of the composites with an increase in shear rate, fibre loading and coupling agent concentration have been investigated using capillary rheometer. It was observed that the melt viscosity of the composites increased with addition of fibres and MAPE. Further, the dynamic viscoelastic behavior of the composites was measured employing parallel plate rheometer. Time temperature superposition was applied to generate various viscoelastic master curves. The fibrematrix morphology of the extrudates were also examined using scanning electron microscopy.