The decomposition behavior of biomass when subjected to thermal stress is different for each kind of biomass. Modeling a pyrolysis or gasification process is complex because the mechanism of decomposition is highly dependent on its mass loss characteristics. The decomposition behavior of coir pith using thermogravimetric analysis is studied for heating rates of 20 and 25 K/min, and the kinetics are predicted using the well known Arrhenius relationship. It is found that the decomposition characteristics of coir pith can be divided into three different zones designated as moisture removal, pyrolysis zone I, and pyrolysis zone II. The kinetic parameters for each zone are validated using a continuous pyrolyzer. It is found that the predicted kinetic parameters well represented the experimental pyrolysis process within an error of +/- 15%.