<p>It is well-reported that the synthesis of cancrinite zeolite via hydrothermal process requires long treatment reaching up to several days; also, the resulting zeolite is commonly phase impure and has weak mechanical strength. In the current work, cancrinite zeolite was synthesized using a simple hydrothermal method utilizing metakaolin-based geopolymer as a template and 5 M aqueous solution of sodium hydroxide as a medium for the hydrothermal process. The time and the temperature effects on the hydrothermal treatment were investigated. X-ray diffraction, scanning electron microscopy, and infrared spectroscopy techniques were used to analyse the structure, morphological properties, and functional groups of the synthesized cancrinite zeolite. It has been found that phase-pure cancrinite zeolite can be obtained via the treatment at 220°C for 6 h in NaOH solution. The findings not only establish the viability of geopolymer as a starting material for cancrinite zeolite synthesis but also contribute valuable insights into the key factors influencing the process. This research advances the understanding of zeolite synthesis pathways and expands the potential applications of geopolymers in the realm of zeolite materials.</p>