A robust frequency-dependent local and regional P-wave attenuation model is estimated forcontinental paths in the Iranian Plateau. In order to calculate the average attenuation parameters,46 337 vertical-component waveforms related to 9267 earthquakes, which are recorded atthe Iranian Seismological Center (IRSC) stations, have been selected in the distance range10–1000 km. The majority of the event’s magnitudes are less than 4.5. This collection ofrecords provides high spatial ray path coverage. Results indicate that the shape of attenuationP-wave curve versus distance is not uniform and has three distinct sections with hinges at 90and 175 km. A trilinear model for attenuation of P-wave amplitude in the frequency range1–10 Hz is proposed in this study. Fourier spectral amplitudes are found to decay as R−1.2(where R is hypocentral distance), corresponding to geometric spreading within 90 km fromthe source. There is a section from 90 to 175 km, where the attenuation is described as R0.8,and the attenuation is described well beyond 175 km by R−1.3. Moreover, the average qualityfactor for Pgand Pnwaves (QPgand QPn), related to anelastic attenuation is obtained as Qpg=(54.2±2.6)f(1.0096±0.07)and Qpn=(306.8±7.4)f (0.51±0.05). There is a good agreement betweenthe results of the model and observations. Also, the attenuation model showscompatibilitywith regional studies.