The drying curves of strained yoghurt did not show a constant rate drying period. The drying took place in the falling rate period during drying process. To explain the drying characteristics of strained yoghurt, nine drying models were applied; however, the model developed by Midilli et al. (2002) showed good agreement with the experimental data. Effective diffusivity coefficient increased with the increasing drying air temperature, which ranged from 9.5 · 1010 to 1.3 · 109 m2/s. The activation energy was found as 26.07 kJ/mol.