In this work, size and morphology controllednovel tungsten oxide nanosphereshave been synthesized via ureaassisted solution combustion method.Ureaplayed the role ofa fuel in the combustion process. The prepared WO3nanospheres were characterized by different methods. X-ray diffraction analysisindicatedthatthe particles werefine crystallised in the nanorange with amonoclinic phase purecrystalline structure.The field emission scanning electron microscopy images confirmed the nanospheres like morphology of WO3particles withhigh agglomeration tendency. Grain sizeof the nanospheres was noted to be almost same (10-20 nm) when the preparation was done with urea, whereas the size control is found to be diminished in the absence of urea. Adsorption and photodegradation of methylene blue was investigated over the WO3 nanospheres under visible light,indicating the potential role of WO3 nanospheres for the permanent removal ofdyes fromwaste water.