Carbon Fiber Reinforced Polymer (CFRP) is a composite material offering numerous advantages, including high strength, low weight, and corrosion resistance. Therefore, in recent years, CFRP in bars has been researched and applied to concrete structures to replace ordinary steel reinforcement in regions and environments that can cause corrosion and the strength degradation of steel reinforcement, such as in coastal areas. There are established recommendations specific to FRP-reinforced concrete structures. For example, the Japan Society of Civil and Engineering (JSCE) published “Recommendation for Design and Construction of Concrete Structures Using Continuous Fiber Reinforced Materials” in 2007, and the American Concrete Institute (ACI) published the latest version of ACI 440.1R-15 “Recommendation for Design and Construction of Concrete Structures Using Continuous Fiber Reinforced Materials” in 2015. However, these mentioned guidelines do not comprehensively address the seismic performance of concrete structures reinforced with FRP reinforcement in general. Given that columns are crucial for maintaining integrity in structures such as bridges and buildings, and their failure can lead to the collapse of an entire structure, it is essential to investigate the seismic behavior of CFRP-reinforced concrete columns. This paper will provide a parametric study of various columns reinforced by CFRP bars and spirals by Finite Element Analysis to investigate the influence of factors, namely longitudinal bar ratios, spiral ratios, and axial compression ratios. The obtained results are presented and discussed, with a comparison to concrete columns reinforced by conventional steel reinforcement.