The behaviour of reinforced concrete (RC) beams shear strengthened with fibre-reinforced polymer (FRP) has been extensively studied. Numerous analytical models have been proposed to predict the shear contribution of externally applied FRP to RC beams. Due to the continuous increase of experimental data, it is fundamental to assess the predictive performance of these models, to found the most appropriate ones and their boundaries of application. This study evaluates the predictive performance of some available models using a comprehensive database of published works. The results reveal that current models have significant shortcomings, resulting in unreliable and potentially unsafe predictions. Therefore, a new simple and more effective model is required. This preliminary study briefly discusses potential approaches to improve the accuracy of these models.This study is a part of the project ‘‘Sticker –Innovative technique for the structural strengthening based on using CFRP laminates with multifunctional attributes and applied with advanced cement adhesives’’, with the reference POCI-01-0247-FEDER-039755. The first author also acknowledges the support provided by FCT PhD individual fellowship with the reference of 2020.08876.BD. This work was partly financed by FCT / MCTES through national funds (PIDDAC) under the R&D Unit Institute for Sustainability and Innovation in Structural Engineering (ISISE), under reference UIDB/04029/2020, and under the Associate Laboratory Advanced Production and Intelligent Systems ARISE under reference LA/P/0112/2020
