In order to provide an image-capturing device for an endoscope that achieves a reduction in size and contributes towards reducing the diameter of the endoscope, the present invention is an image-capturing device (20) for an endoscope provided with a solid-state image-capturing element (21) having a light reception surface for receiving light entering through an observation window at a distal end surface of an endoscope insertion part (2), the center of a rectangular cross-section of the outer profile of the solid-state image-capturing element (21) being positioned so as to be decentered with respect to the center of the insertion part in a cross-section of the insertion part in the direction orthogonal to the longitudinal direction of the insertion part an input/output cable (23) inserted through the insertion part and electrically connected to the solid-state image-capturing element and an image-capturing substrate (22), which has a flat cable connection part (22b) provided with a connection terminal to which the input/output cable is connected and positioned so as to extend in the longitudinal direction of the insertion part, the image-capturing substrate (22) being interposed between the solid-state image-capturing element and the input/output cable, wherein: the solid-state image-capturing element has, in the rectangular cross-section, a first side (21a) and a second side (21b) facing the first side and being nearer the center of the insertion part than the first side and the cable connection part of the image-capturing substrate is provided, so as to be parallel to the second side, at a position nearer the second side than the first side.Afin de produire un dispositif de capture dimage pour un endoscope pour obtenir une réduction de taille et contribuer à réduire le diamètre de lendoscope, la présente invention propose un dispositif de capture dimage (20) pour un endoscope qui est pourvu dun élément de capture dimage à semi-conducteurs (21) présentant une surfa
