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Impact of different industrial wastes in environment is a major threat nowadays. One such industrial waste, cupola slag, a by-product of cast iron production in cupola furnace has no commercial utilization due to lack of proper waste management practices. Thus, it segregates into landfills causing a major damage to environment. Research indicates that cupola slag exhibits good hydraulicity and pozzolanic properties when compared with conventional building materials. This opens a door to reuse cupola slag in making cement concrete. The major constituents of cement concrete namely cement, fine and coarse aggregates can be partially or completely substituted by cupola slag to develop green concrete. This work presents a critical review of past studies on development of green concrete using cupola slag as a substitute for conventional building materials. The cost of producing such novel green concrete has also been compared with conventional controlled concrete mix which followed by detailed analysis of limitation and approaches to overcome them. This work will be beneficial to the foundry owners and researchers working in this field. [ABSTRACT FROM AUTHOR]