PROBLEM TO BE SOLVED: To provide an ultrasonic transducer with high productivity and high stability against an environmental change, an ultrasonic probe including the same, and an ultrasonic imaging apparatus including the same.SOLUTION: An ultrasonic transducer 100 includes: a groove 140 for partitioning a piezoelectric material layer 130 so as to constitute a piezoelectric element and a filler 150, disposed inside the groove 140 and on a surface of the piezoelectric material layer 130, for bonding an acoustic matching layer 160 to the piezoelectric material layer 130. The filler 150 contains an epoxy resin. A bulk modulus of the filler 150 is 2.5 to 4.0 GPa.SELECTED DRAWING: Figure 1
