Solid waste is the cheapest and abundantly available renewable source of energy. The most common method used for waste disposal is landfilling and incineration which causes land as well  air pollution. Pyrolysis of organic waste material yields bio-fuels such as solid, liquid and gaseous fuels and minimizes the air pollution. In this study, co-pyrolysis of the organic solid waste is the main focus emphasizing the effect of key variables on the yield of bio-oil obtained from wood waste and paper cup waste. The temperature was found as the most significant parameter in the pyrolysis process and optimum temperature was 450^oC having bio-oil yield of 35 percent. The particle size used was 10 mm & 20 mm respectively and showed an insignificant effect on bio-oil yield. GC-MS analysis of bio-oil identified the organic compounds such as 2,2,3,3-Tetramethylhexane, 2,2-Dimethylpropionic acid, 2,2,3-Trimethylbutane, 4,4-Dimethyl Octane. The calorific value of the bio-oil was 22 MJ/kg.