Yes, HCl (hydrochloric acid) is polar. The polarity in a molecule is determined by its shape and the difference in electronegativity between the atoms involved.
In the case of HCl, the hydrogen atom is less electronegative than the chlorine atom, which means that chlorine attracts the shared electrons in the bond more strongly. This creates a dipole moment, where one end of the molecule becomes slightly negative (the chlorine end), and the other end becomes slightly positive (the hydrogen end). This unequal distribution of charge makes HCl a polar molecule.