An object information acquiring apparatus, includes: an irradiator irradiating an object with light； a probe having a plurality of transducers which receive an acoustic wave generated from the object irradiated with the light and output a reception signal； and a controller using the reception signal to acquire property information on the interior of the object, and the probe has a plurality of apertures and a surface on which the plurality of transducers are arranged has a spherical surface shape.
