With photon correlation spectroscopy we have studied dynamical behavior in several systems of nematic liquid crystals embedded in host matrices, i.e., polymer dispersions of nematic droplets, Nuclepore membranes with cylindrical cavities, and porous silica aerogel. In all cases the dynamics of orientational fluctuations is substantially changed compared to the bulk nematic phase and some new phenomena appear. While due to the confinement no long wavelength modes of the director orientational fluctuations are present in the nematic droplets and cylinders, in the nematic liquid crystal in the aerogel a mode with the correlation length of 1–2 orders of magnitude larger than the average pore size was observed. An additional dynamic process with a nearly logarithmic autocorrelation function extending from millisecond to more than ten seconds is more or less pronounced in all three systems and we attribute it to reorientational diffusion in random potential.