Provided are: an acoustic wave probe composition containing components (A)-(D) below; and an acoustic wave probe silicone resin, an acoustic wave probe, an ultrasonic probe, an acoustic wave measuring apparatus, an ultrasonic diagnostic apparatus, a photoacoustic wave measuring apparatus, and an ultrasonic endoscope using the acoustic wave probe composition. (A) a linear polysiloxane having a vinyl group, (B) a linear polysiloxane having two or more Si-H groups in the molecular chain, (C) a polysiloxane resin, and (D) surface-treated silica particles having an average primary particle size of greater than 16 nm and less than 100 nm.
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