Laminated bamboo is an environmentally friendly construction material but has a weakness in resisting flexural loads. To overcome this weakness, this study uses the NSM method by adding steel reinforcement to laminated bamboo T-beams. The purpose of this study is to investigate the flexural capacity of laminated bamboo T-beams using the Near Surface Mounted (NSM) reinforcement method with steel bars. The aim of this research is to improve the flexural capacity of laminated bamboo T-beams through the Near Surface Mounted (NSM) reinforcement method using steel bars. The research aims to enhance the flexural capacity of laminated bamboo T-beams through NSM reinforcement with steel bars. The study includes experimental tests and numerical analysis of T-beam flexural capacity with and without steel reinforcement. T-beam dimensions are 80 mm flange width, 30 mm flange thickness, 40 mm web width, and 80 mm height, with 15 samples. Flexural testing used third-point loading with 6 mm and 8 mm steel bars in single and double reinforcements. The test results show that the addition of steel reinforcement significantly increases the flexural capacity. Beams with double 8 mm steel reinforcement (B2-T8–2) exhibited the highest flexural capacity, with an increase of up to 52.56% compared to unreinforced beams (B1-Ctrl). The comparison between the experimental and numerical simulation results shows an average ratio of 1.55, indicating that the experimental results were approximately 55% lower than the numerical predictions. Nevertheless, laminated bamboo has proven to have potential as a reliable construction material with significant strength improvements through the NSM method.