A multi-mode piezoelectric filter comprises a piezoelectric substrate (2) made of a LiTaO3 single crystal, a plurality of spaced electrodes (3,4) which are formed adjacently on a front major surface of the substrate, and a counter electrode (11) which is formed on a rear major surface of the substrate in opposition to the spaced electrodes. The spaced electrodes and the counter electrode coact with the intervening portion of the substrate to form two or more energy trapped type multi-mode filter elements vibrating in the thickness shear mode such that the filter elements are coupled to form a cascade connection. Damping material such as silicone gel is applied at least on the filter elements. <IMAGE>
