The kinetics involved in giant bamboo thermal degradation under N2 atmosphere was investigated through non-isothermal thermogravimetric analyses (TGA) and derivative thermogravimetry (DTG) applying three isoconversional methods: Coats and Redfern (CR), MacCallum and Tanner (MT), and van Krevelen (VK). Besides that, sample characterization was conducted by van Soest’s method and by proximate analysis. The TGA experiments were performed with a N2 rate of 50 mL/min and five different heating rates were used: 5, 10, 15, 25 and 50 °C/min. The Coats-Redfern’s fitting-model indicated that two-dimensional diffusion was the mechanism which best describes the pyrolysis process in the highest weight loss region. Comparing the calculated and experimental weight loss, was verified that the CR’s and MT’s average deviations were lower than the evaluated by VK’s method, indicating that the CR’s and MT’s describe better the giant bamboo’s pyrolysis.