Reinforced concrete structures subjected to extreme environmental conditions, such as freeze-thaw cycles, temperature fluctuations, and varying climatic influences, are prone to crack formation, which facilitates the ingress of moisture and chlorides, thereby initiating the corrosion of steel reinforcement. The corrosion of reinforcement leads to rust formation, resulting in spalling and accelerating the deterioration of the concrete. GFRP (Glass Fiber Reinforced Polymer) bars, known for their excellent corrosion resistance, offer significant advantages over conventional reinforced concrete structures in terms of durability and maintenance. For these reasons, GFRP bars are gaining recognition as a viable alternative to steel reinforcement, particularly in the context of reducing carbon emissions and improving durability. However, to effectively utilize GFRP bars, it is crucial to develop a comprehensive understanding of the behavior of structural members reinforced with GFRP. While the behavior of flexural members has been well-established, the assessment of punching shear, a representative stress disturbance region, remains challenging. This study aims to analyze the punching shear behavior of slab-column connections reinforced with GFRP bars by conducting experiments on 10 slab-column connection specimens. The test parameters include reinforcement ratio, column size, column aspect ratio, and reinforcement bar size. The failure modes, load-bearing capacity, load-deflection responses, crack patterns, and strain distributions were analyzed to evaluate the punching shear behavior of slab-column connections reinforced with GFRP bars. The experimental results were then compared with the punching shear strength predictions from various design codes and guidelines, including ACI 440.11-22.