Conductive hydrogel nanocomposites containing graphite, graphene oxide (GO), and graphene particles were synthesized by free radical polymerization in aqueous solution. The effect of cross-linker, initiator, graphite, GO, and graphene concentrations on water absorbency and electrical conductivity of hydrogels was investigated. The synthesized composites were then characterized by X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy, scanning electron microscopy, and thermogravimetric analysis. The graphene/polyacrylamide hydrogels showed highest conductivity of about 0.2 Scm(-1), and specific capacitance of polyacrylamide/graphene hydrogel in H2SO4 solution was found to be 616Fg(-1).