Multilayer prototype actuators were demonstrated using (Bi_1/2Na_1/2)TiO₃ [BNT]-based ceramics as active layers and Pt as internal electrodes. One of the BNT-based solid solutions, 0.68(Bi_1/2Na_1/2)TiO₃–0.04(Bi_1/2Li_1/2)TiO₃–0.28(Bi_1/2K_1/2)TiO₃ (BNLKT4–28) has been selected as the an active layer and it showed a relatively large piezoelectric strain constant d₃₃ of 130 pC/N and a high depolarization temperature T_d of 226°C. The total number of layers was 10 and the active layer thickness was 125 µm for the sintered body. The final compact dimensions were approximately 5 × 5 × 2 mm³. From the SEM observation, there were no apparent delaminations around the interface between Pt electrodes and active BNLKT layers. The large electric-field-induced strain at 70 kV/cm was 0.17% and the longitudinal dynamic displacement at the same electric field was 2.1 µm.