The development of high-performance engineering materials made from natural resources is rising worldwide, because of the renewable and environmental problems. Among various type of natural fibers, jute fibers have been widely exploited over the past few years. This paper presents the evaluation of elastic modulus of jute/polypropylene (PP) composites using mathematical modelling. Composite models namely Rule of mixtures (ROM), Inverse Rule of Mixtures (IROM), Halpin-Tsai (HT) and Bowyer-Bader (BB) will be employed to confirm the experimental data from the available literature. The effect of the fiber loading, fiber size, and fiber orientation will also be discussed within the scope of the studied models.