An object information acquiring apparatus according to the present invention includes: a supporter which supports a plurality of conversion elements each converting a photoacoustic wave from an object into an electrical signal； an imager which acquires an image of the object； a scanner which changes a relative position between the object and the supporter； an acquirer which acquires first and second specific information of the inside of the object based on an electrical signal acquired at a first and second relative position between the object and the supporter； and a corrector which corrects a deviation between the first and the second specific information based on positional information of the object.
