The electrical properties of a single crystal of KTiOPO4 was studied by impedance spectroscopy methods in the temperature range -100 to 100 °C. The complex resistivity decreases rapidly with increasing temperature, and resistivity dispersion begins at a temperature of TS=-80 °C. The complex resistivity was fitted to the superposition of two Cole-Cole-type relaxations. The low frequency relaxation is associated with the electrode/crystal surface, while the high frequency relaxation is interpreted as resulting from ion migration in the bulk. It is believed that high frequency relaxation is related to ionic hopping conduction, which arises mainly from the jumping of K+ ions. The activation energies associated with hopping conduction are Ea 0.21 eV above TS and Ea 0.11 eV below TS .