India is the second largest in major sugar producing countries. Due to that there is increase in bagasse as a by-product from the sugar mill. Bagasse is the fibrous residue of sugar cane after crushing and extraction of juice. Sugar cane bagasse ash is the waste product of the combustion of bagasse for energy in sugar factories. Sugar cane bagasse ash is disposed of in landfills and is now becoming an environmental burden. Fly ash bricks can be extensively used in all building constructional activities similar to that of common burnt clay bricks. The objective of this work is to review the information regarding Fly Ash brick properties and their uses in a most concise, compact and to the point manner.