A Single crystal of Atenolol-Glycine was grown by slow evaporation at room temperature. The growth conditions of the crystals are studied and the grown crystals are confirmed by single X-ray diffraction studies. The grown crystal was characterized using TG-DTA, FT-IR, UV-Vis, SEM, EDAX and single crystal XRD. The presence of various functional groups was confirmed by FT-IR spectra. The UV-Vis spectra indicate that the crystal has very good absorption in the entire visible and near IR region. Band gap determination is also carried out to find the variation presented by doping. The decomposition temperatures and the mass loss have been estimated from the thermo gravimetric analysis.