With the advent of new concrete materials and advances in structural design, new thin structural elements are becoming increasingly popular. However, the lack of a standardized shear characterization process impedes full utilization of the inherent shear strength of these novel concrete mixes. This paper aims to address this by introducing a novel direct shear test for fibre reinforced concrete (FRC) that uses standardized samples and loading method. The shear behaviour of the cementitious matrix and FRC samples having different fibre dosages was thoroughly captured using the test. Furthermore, the new testing method can detect the effect of fibres on the shear strength, with samples with higher dosages exhibiting greater shear strength. Additionally, residual strength was found to depend on both the fibre dosage and type, with longer fibres exhibiting slightly better performance and higher ductility. This study contributes to the advancement of shear strength characterization in concrete and provides valuable information on the behaviour of fibre-reinforced concrete under shear loading, potentially facilitating the direct use of concrete shear strength in the design, especially for thin structural elements without conventional longitudinal and shear steel reinforcements.