Carbon foams are light weight thermos-structural materials used for high temperature thermal protection, fire resistant structures, EMI shielding and acoustic absorption. They are produced by the foaming, setting and carbonization of synthetic organic polymers and pitches. Biomasses are naturally renewable plant based materials available in large quantities at low cost. Sustainable development demands a shift from petroleum based raw materials to biomasses for the production of advanced materials. We have developed green filter-pressing process for the preparation of carbon composite foams from biomasses such as natural cotton, newspaper waste, sawdust and rice husk using sucrose as a carbonaceous binder. The carbon composites of various densities could be produced from each biomass by varying the sucrose solution concentration used for filter pressing. The produced carbon composite foams exhibit low thermal conductivity, reasonably high compressive strength, excellent fire resistance and very high EMI shielding properties.