In order to obtain a suitable model to represent the drying kinetic curves of papaya seeds, the experimental curves (Y versus t) were fitted with the Lewis, Overhults and double exponential models. The results are shown in Table 2. Based on the higher values of the coefficient of determination (R2 > 0.997) and lower values of sum of squared residues (SSR < 0.0135) and mean squared error (MSE < 0.0005), it was found that the Overhults model was the most suitable to represent the drying of papaya seeds. Also, for the Overhults model, the distribution of residues was random around zero, showing that this model was not biased. For the Lewis and double exponential models, the distribution of residues was biased. In general, the tendency of KO parameter (Table 2) corroborated with the effects of temperature and air velocity, as presented above. As recently presented by Kucuk et al. (2014), the Overhults model was suitable to represent the drying of others products.