<p>This research aims to experimentally assess the influence of steel fibres (SF) on the shear performance of sustainable self-compacting concrete (SCC) beams made using 100% recycled aggregates (RA). For this aim, a simple treatment procedure was first utilised to improve the characteristics of the recycled aggregate by saturating particles in a cement-silica fume slurry (CSFS). After that, seven concrete beams of dimensions 1700 mm × 250 mm × 150mm. Five of which were made from SCC mixes containing hooked-end, micro, and hybrid steel fibres with 0.5% and 1% volume fractions, and 100% recycled aggregate. The remaining two were made with either normal aggregate or recycled aggregate and without any steel fibres to serve as references. All beams were made without shear reinforcement and were designed to assess the concrete's contribution to the shear capacity. The beams were tested under a four-point bending configuration, based on which the load–deflection diagram, failure load, and crack pattern were documented and discussed. Additionally, a comparative analysis was performed to evaluate the validity of the typical codes and mathematical models proposed by researchers for predicting the shear capacity of the tested beams. The results showed that using recycled aggregate lowered the maximum shear capacity of reinforced SCC beams by about 15% compared to the reference beam made of normal aggregate. However, the incorporation of steel fibres resulted in a significant enhancement of the shear capacity. The shear enhancement was about 47% and 37% for micro and hooked SF with 0.5% V_f and 75%, 54%, and 70% for 1% micro, hooked, and hybrid SF, respectively. Additionally, the comparative analysis has shown that the equations proposed by IS: 456 (2000) and Li et al. (1992) were able to yield the best shear strength prediction for non-fibrous and fibrous beams, respectively.</p>