Abstract: The current research addresses Engineered Cementitious Composites (ECC) as a new alternative for retrofitting damaged concrete beams. Twenty-one plain concrete beams with pre-defined artificial cracks were prepared and repaired using different combinations of ECC alone or together with Carbon Fiber Reinforced Polymers (CFRP). The study showed that replacement of the inferior layer from the bottom of the deteriorated beams with a thin layer of ECC could be able to restore the beam to a condition better than its original state. Moreover, the repair with ECC was found effective in enhancing the member ductility as well. It was also shown that pasting CFRP directly over ECC substrate resulted in shear failure rather than the undesirable interfacial debonding mode of failure that typically occurs in case of concrete substrates.