C-13 nuclear spin relaxation processes in seven cyclodextrins (from six-membered alpha to twelve-membered eta) were investigated in (H2O)-H-2 solution at multiple magnetic fields. Detailed analysis of C-13 longitudinal relaxation in laboratory and rotating frames and C-13{H-1} nuclear Overhauser enhancement in these molecules yielded their rotational diffusion tensors and a semiquantitative picture of their internal dynamics.