Concrete is considered to have good fire resistance since it is non-combustible, absorbs heat only slowly, and does not give off toxic fumes or smoke. The behavior of concrete in fire has been studied by many researchers, but there has been no significant research done on the fire resistance of plain concrete, concrete columns reinforced with steel, as well as bamboo and its composites in comparison. The current research aims to investigate the fire resistance of concrete columns reinforced with steel and bamboo as a composite structure by conducting various tests on four sets of columns. The variables considered in this study include reinforcement materials, concrete cover, fire duration and cost benefit. To that effect, experimental investigations were conducted on 65 specimens of reinforced concrete columns measuring 200 x 200 mm with a 700 mm height, each with different sets of elements. The specimens were sent on fire, taken out of the furnace, and cooled. Finally, it was tested to see how much load could be entertained by each set. As a result, it was observed that the longer the burning time, the more the edges of the columns spalled and cracks were observed. In addition to that, during the test, it was confirmed that steel reinforced columns and composite columns had a minimum crack size and less spall than that of plain and bamboo only reinforced columns. The ultimate failure loads for columns that were exposed to fire are smaller than those for columns that were not exposed to fire by 3–31%. Those steel only and composite columns that were not exposed to fire showed the first crack at nearly 87% of the column failure load, while all four remaining sets of columns exposed to fire showed the first crack at about 45–55% of the column failure load. In fire durations of 0 and 120 minutes, the reduction differences in failure load on composite columns were 24.1%, 18.9%, and 16.1%. While steel reinforced was 21.7%, 20.3%, and 13.1% with 25mm, 30mm, and 35mm cover thickness, respectively. Increasing cover thickness reduced the failure of all sets of columns during rising fire durations. Replacing the steel bars with bamboo in concrete columns as an alternative material was the economical reinforcement for columns. The outcome of the experiment shows that composite columns have good fire resistance compared to plain and bamboo reinforced concrete columns. Key Words: - RC columns, Fire resistance, Bamboo, Steel, Composite structure, Compressive strength