An image pickup apparatus that prevents hooking of a cable, coming-off of a connector, or the like without lowering insertion and extraction performance of a cable even when external connection terminals are arranged on inclined faces formed on a side surface of an apparatus main body in its width direction while reducing a size of the apparatus main body in the width direction. The inclined faces inclines such that ends of the respective inclined faces on a back side of the apparatus main body are inclined in a direction to come close to the optical axis. The inclined faces are arranged at positions so as not to overlap to each other when viewed from the width direction of the apparatus main body, and are arranged such that a part of the inclined faces overlap to each other when viewed from a direction of the optical axis.