[Object] To provide an array-type ultrasonic vibrator, which is excellent in productivity and practicability and has a two-dimensional array structure capable of improving a focusing property of an ultrasonic beam in a slice direction, an ultrasonic probe, an ultrasonic catheter, a hand-held surgical instrument, and a medical apparatus. [Solving Means] An array-type ultrasonic vibrator according to an embodiment of the present technology includes a vibrator array and a resistor. The vibrator array is a vibrator array in which ultrasonic vibrator elements constitute a two-dimensional array including a plurality of element rows in which a plurality of ultrasonic vibrator elements are arranged in a slice direction. The resistor is electrically connected between a pair of arbitrary ultrasonic vibrator elements in the element row.
