Isochron for the Kudowa Zdrój granitoids based on 12 points representing whole rocks from entire massif yields 315 š 26 Ma and initial ratio 87Sr/86Sr = 0.710879. Seven samples from the northern and middle parts of the massif yield 331 š 11 Ma (87Sr/86Sri = 0.710304). Three samples from the southern part, yield 369 - 394 Ma (calculated for initial ratio 87Sr/86Sr = 0.710304). The initial ratios obtained are distinctly higher than those reported for other Variscan granitoids in the Sudetes.