The present invention is an organic piezoelectric material characterized by containing a compound represented by the following general formula (1), and has excellent piezoelectric properties and is thermally stable, an organic piezoelectric material, an ultrasonic vibrator, and an ultrasonic transducer An acoustic probe can be provided. General formula (1) R1-Q-A1-YZ本発明は、下記一般式(1)で表される化合物を含有することを特徴とする有機圧電材料であり、圧電特性に優れ、かつ熱的に安定な有機圧電材料、超音波振動子および超音波探触子が提供できる。一般式(1) R1-Q-A1-Y-Z