The use of fly ash in the development of geopolymers is considerably practical in minimizing landfills. In addition, to preserve the environment, this approach may also help converting waste material to profitable returns. Currently, geopolymers are used in numerous applications owing to their properties that are comparable as the conventional material of Ordinary Portland Cement (OPC). A few advantageous properties of the geopolymers included resistant to acid, fast setting, high compressive strength and produce low carbon dioxide gas to the atmosphere. However, chemical interaction of raw aluminosilicates reactive precursor with an aqueous alkaline solution during synthesis process has commonly produced a porous geopolymer, which gives the limitation to the geopolymer performance. This weakness may be recovered by implementing fiber reinforcement to improve the properties and reduce the number of internal pores of the geopolymer. This study evaluates the enhancement recorded in geopolymer properties prior to addition of glass fiber into geopolymer matrix. The results of adhesion, flexural and compressive strength of geopolymer significantly increased by addition of glass fiber. © 2023, Association of American Publishers. All rights reserved.