Stable, transparent and superhydrophobic carbon nanotube (CNT) nanocomposite films were fabricated by one-step spray casting process using the polystyrene functionalized CNTs, which were prepared by "living" free-radical polymerization and analyzed by means of infrared spectroscopy and thermal gravimetric analysis. The CNT film has a high water contact angle of 160 degrees and a sliding angle of less than 3 degrees. The surface topography of the fabricated film was characterized by field emission scanning electron microscopy. The transparency of the CNT film was investigated by UV-vis spectroscopy. The result shows that the CNT film has light transmittance of about 78% in the visible light region. (C) 2009 Elsevier B. V. All rights reserved.