EXTENDED ABSTRACT ZnO-SnO2 and TiO2-SnO2 composite nanofibers (CNFs) are synthesized by electrospinning a polymeric solution containing an equimolar concentration of the metals precursors and subsequent annealing. The composite formation is demonstrated by X-ray diffraction and energy dispersive X-ray measurements and morphology by scanning electron microscopy. Synergy in electronic and electrical properties are demonstrated by cyclic voltammetry, absorption spectroscopy, and electrochemical impedance spectroscopy. The TiO2-SnO2 and SnO2-ZnO CNFs offer valuable properties when utilized as a photoanode in dye-sensitized solar cells in terms of photoconversion efficiency (PCE~ 8.00%) and (~ 5.60%), respectively, compared to their binary counterparts SnO2 (~ 3.90%), TiO2 (~ 5.1%) and ZnO (~ 1.38%). Recently, one-dimensional nanofibers materials, have been widely growing interest because of their fundamental scientific interest as well as their potential applications in functional devices [1-3]. Among them, nanostructured metal oxide semiconductors (MOS), tin oxide (SnO2), zinc oxide (ZnO) and titanium dioxide (TiO2) have demonstrated excellent performance in various technological applications [4, 5] such as; in dye-sensitized solar cells (DSSCs). However, currently, the interests are shifting towards the synthesis of more complex structures employing two MOS for a range of applications including photoelectrode in DSSCs. These coupled MOS overcome the limitation of a single MOS, such as core-shell and composite nanostructures which possess qualities of both the component oxides and permit