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To improve accuracy of processing of searching for an image including a desired person from among a plurality of images, the present invention provides an image search apparatus 10 including an image acquisition unit 11 that acquires a plurality of query images, an attribute information generation unit 12 that generates attribute information from each of a plurality of the query images, an integration unit 13 that generates integrated attribute information by integrating a plurality of pieces of the attribute information generated from each of a plurality of the query images, and a search unit 14 that searches for a target image from a plurality of reference images by using the integrated attribute information.