PROBLEM TO BE SOLVED: To provide an ultrasonic probe that can reduce time and effort for a puncture work, and to provide an ultrasonic measurement device.SOLUTION: The ultrasonic probe 2 includes: an ultrasonic sensor 25 having a first direction (Y direction) as a longitudinal side; a sensor unit 21 where a plurality of ultrasonic sensors 25 is disposed in a second direction (X direction) crossing with the first direction; and a graduation part 27 provided in the sensor unit 21 and having a first graduation line 272 aligned in the first direction.SELECTED DRAWING: Figure 2【課題】穿刺作業の手間を軽減可能な超音波プローブ、及び超音波測定装置を提供する。【解決手段】超音波プローブ2は、第一方向(Y方向)を長手とする超音波センサー25と、超音波センサー25を第一方向と交差する第二方向(X方向)に複数配設したセンサーユニット21と、センサーユニット21に設けられ、第一方向に並ぶ第一目盛線272を有する目盛部27と、を備える。【選択図】図2