Structural reinforced concrete (RC) elements incorporating glass fibre-reinforced polymer (GFRP) bars have been claimed to exhibit notable deformability under seismic loading. In this research, an attempt has been made to evaluate the influence of retrofitting with GFRP bars on the behaviour of RC beam-column joints. To this end, eight full scale joints were fabricated and examined under cyclic loading. Eight specimens were cast, out of which two were based on control specimen and the remaining six based on GFRP bonding. The crack propagation and force–displacement hysteresis curves are presented as the main test outputs. Moreover, seismic parameters namely displacement ductility, absorbed energy, stiffness and equivalent damping ratio are compared and discussed. Overall, the results demonstrated that incorporating GFRP retrofitting could enhance cyclic response of joints in terms of ductility, absorbed energy and equivalent damping ratio.