Light‐scattering techniques were used to study various aspects of the reflection of surface acoustic waves (SAW) at three different interfaces on y‐z LiNbO3. Investigated were a free‐metallized surface boundary, the edge of a thick gold film, and a crystal corner. In all three cases, the reflection coefficient was measured and found to be a maximum for the crystal corner and small for both film interfaces. Light scattering from the acoustically created surface corrugations near the interface was used to identify the transition region in which bulk modes as well as SAW are present. The angular spectrum and total power of bulk waves created via mode conversion from surface waves were also measured.