For the first time, the electrical resistivity of Cu64.5Zr35.5, Cu50Zr50 and Cu33.3Zr66.7 alloys in a liquid state up to 1600 K has been measured by contactless method in rotating magnetic field. The measurements were carried out in the cooling process in a helium atmosphere with a purity of 99.995%. The error of the electrical resistivity determination did not exceed 5%. It is found that the electrical resistivity of liquid alloys Cu64.5Zr35.5, Cu50Zr50 and Cu33.3Zr66.7 decreases linearly with increasing temperature, while for liquid copper and zirconium it increases with temperature. The concentration dependences of the electrical resistivity and its temperature coefficient have a maximum at 55 at. % and a minimum of about 60 at. % Zr, respectively. The obtained concentration dependences are similar to the dependences obtained for amorphous alloys, and are explained from the position of the Ziman theory.