Graphene, a one-atom-thick sheet of hexagonally arranged sp2 carbon atoms, has gained attention in recent scientific research for its unique structural geometry. The use of graphene as a nanofiller in the creation of nanocomposites enhances the properties of the polymer matrix. Researchers have been exploring the use of various nanofillers, such as graphene, carbon nanotubes, metal oxides, and layered silicates, in the blending process to create materials with improved physicomechanical properties. Graphene, in particular, has shown potential for its exceptional electrical, thermal, mechanical, and gas barrier capabilities when combined with polymers. This chapter reviews the various methods of synthesizing graphene-based nanofillers with a focus on the techniques and adjustments used to effectively distribute graphene throughout the polymer matrix for potential improvements of these composites and their associated challenges.