Provided is an object information acquiring apparatus including a supporting unit configured to be capable of holding a liquid acoustic matching member, a plurality of receiving elements each supported on the supporting unit to receive an acoustic wave propagated from an object via the acoustic matching member and output an electrical signal, a scanning unit that changes a relative position of each of the receiving elements and the object by moving the supporting unit, a controlling unit that controls a velocity of movement of the supporting unit performed by the scanning unit, and a processing unit that acquires specific information of an inside of the object based on the electrical signal. The scanning unit moves the supporting unit on a path having portions of different curvatures.
