In the paper, the water adsorption isotherms were determined for dried carrots at 5, 15, 25, and 35 ºC over a range of water activity from 0.006 to 0.910. It was found that the shape of water adsorption isotherms was sigmoidal and their course corresponded to the type II isotherms according to the Brunauer’s classification. The GAB and BET were the best to describe the isotherms obtained. The highest value of net isosteric heat of water adsorption equalling 18.1 kJ/mol was reported at an equilibrium water content of 10 g water (100 g d.m.)^-1.