An image capturing apparatus on which an accessory including a first mount is mountable includes a second mount. The second mount is configured to allow bayonet coupling to the first mount of the accessory. The second mount includes a plurality of terminals disposed in a circumferential direction, and a terminal holder configured to hold the plurality of terminals. Each of the plurality of terminals is electrically connectable to a terminal of the accessory. The terminal holder has a height level difference in a center-axis direction of the second mount. The plurality of terminals include a first terminal configured to be used to detect mounting of the accessory on the image capturing apparatus. The first terminal is disposed further in a mount direction of the accessory than the other terminals among the plurality of terminals on a first stage of the terminal holder.