Nowadays, the world overseases lightweight construction options to decrease the total weight of their infrastructures. Foam concrete is an emerging option and this option uses cement to gain optimum strength. In foam concrete, cement is a primary ingredient that encompasses 55.3% to 63.1% by volume. Therefore, it is important to look at the feasibility of using by-products or waste materials as cement to maintain the sustainable construction industry and reduce CO2 emissions from this industry. Palm oil fuel ash is the significant solid waste released from huge palm oil industries. This study examines the effect of the properties of foamed concrete that can be used for nonstructural members, which is made from ordinary Portland cement, sand, palm oil fuel ash, and foaming agent admixture. These properties include workability, optimum water-to-cement ratio mix, durability, compressive strength, splitting tensile strength, and water absorption. The effect of palm oil fuel ash waste with 0%, 10%, 20%, and 30% partial replacement on the mass of cement is observed and analyzed. Twelve mixes were prepared for three water–to–cement ratios (0.35, 0.4, 0.45) for each percent replacement to check the workability of the mix and to look at the water-cement effect on compressive strength, and then the optimal mix was chosen. The total of specimens used were 108 cylindrical molds with a diameter of 10cm and height of 20cm for compressive strength, 24 (15cm diameter, a 300cm height) specimen used for the tensile splitting test, and 24 (10x10x10cm cube) specimen used for water absorption test. The specimens were kept in a curing tanker until one day before the test. Two-way factorial ANOVA with a 95% confidence interval was a part of the data analysis.The results of the study show that POFA is considered a pozzolanic material since the percentage sum of silicate, aluminate, and ferrite is greater than 50%. Foam concrete with POFA shows an improvement in compressive strength, tensile strength, and water absorption up to 20% POFA replacement with 0.4 w:c ratio but a decrease in workability when the POFA percentage increases. Generally, foam concrete replacement with POFA shows an environmental impact on the construction industry.