  We report on a study of the inelastic scattering properties of (001) and
(111) Ho$_2$Ti$_2$O$_7$ single crystals at room temperature. Structural and
compositional analysis along with absorption measurement confirms single
crystalline phase of all samples. Room temperature polarized Raman measurements
were performed on crystals in non-resonant and two different resonant
conditions by using six different laser excitation lines. Lorentzian model
fitting analysis is performed on all measured spectra in order to identify the
difference in the Raman scattering cross-section in resonant and non-resonant
conditions. Variations in the fitting parameters on account of different
polarization configurations and crystallographic orientations has helped
identifying their symmetry if present. Several possible scattering pathways are
discussed in order to qualitatively explain the anomalous scattering results in
Ho$_2$Ti$_2$O$_7$
