Abstarct: In this study, silver-graphene oxide (GO-Ag) nanocomposites were prepared using Tamarindus indica extract as a reducing agent. The prepared nanocomposite was used as an adsorbent in the process of adsorption of lead(Ⅱ) ion from aqueous solution. The nanocomposite characterized by common methods such as Fourier-transform infrared spectroscopy) FT-IR), X-ray diffraction pattern (XRD), Scanning electron microscopy (FE-SEM), energy- dispersive X-ray spectroscopy (EDS), Raman spectra and TGA thermal analysis. The adsorption process of Pb2+ ion was investigated by GO-Ag adsorbent and the factors affecting this process such as lead solution concentration, pH, amount of adsorbent, contact time and temperature. The percentage of lead(Ⅱ) ion removal with a concentration of 125 mg/L, equilibrium time of 7 minutes, pH=5.0, and 0.040 g of the as-prepared GO-Ag adsorbent is equal to 97.67%. According to the obtained results, the adsorption process follows pseudo-second-order kinetics and the adsorption isotherm model is consistent with the Langmuir adsorption isotherm model.