Proton conducting composite polymer electrolytes have been prepared by using semi crystalline polymer Poly (vinyl alcohol), proton donor NH₄PF₆, and nanofiller ZrO₂ with solvent DMSO by Solution Casting Technique. The maximum Ionic conductivity of the polymer electrolyte has been found to be 2.222 x 10^-3 Scm^-1 for 2mol% ZrO₂ incorporated polymer electrolyte 70PVA: 30 NH₄PF₆ at ambient temperature. Magnitude Bode plot analysis shows a negative temperature Co-efficient of resistance type behavior. The Kohlrausch exponent of the best conducting composite polymer electrolyte is less than one indicating Non-Debye nature of the prepared polymer electrolytes. The loss tangent plot shows a peak at particular frequencies for different temperature due to the active component (ohmic) of current.