The cement manufacturing process releases huge amounts of CO2 into the atmosphere, which has a detrimental impact on the environment. Geopolymer concrete that uses aluminosilicate precursor material as binder is an eco-friendly alternative to Portland cement concrete. Commonly used aluminosilicate precursors include natural raw materials such as metakaolin and volcanic ash, etc. and industrial solid waste such as fly ash (FA), ground granulated blast furnace slag (GGBFS), etc. FA-GGBFS-based geopolymer concrete uses a combination of FA and GGBFS as a binder material that does not require oven curing for activation. Although geopolymer concrete does not use cement, it still has shortcomings in terms of environmental friendliness because the aggregates (fine and coarse) used to prepare geopolymer concrete are natural resources and their excessive use in the manufacture of concrete leads to the depletion of those materials. To address a similar problem in cement concrete, scientists have tried to replace natural aggregates with various waste materials, which not only conserves natural resources but also helps in waste management. Steel slag (SS) and coal mine rock waste (CMRW) are two such waste materials that have potential to be used as coarse and fine aggregates in geopolymer concrete to make it truly green. With this background, the primary objective of the present study is identified as to comprehensively evaluate FA-GGBFS-based geopolymer concrete incorporating SS and CMRW as coarse and fine aggregates.