An endoscope apparatus includes a display portion coupled to an operation portion, configured to be moved relative to the operation portion and configured to display an observation image obtained by the endoscope apparatus, a bending operation portion provided at the operation portion and configured to be moved in a basic direction relative to the operation portion wherein the bending operation portion is configured to be moved in an additional direction different from the basic direction, and a movement driving mechanism configured to move the display portion relative to the operation portion according to movement of the bending operation portion in the additional direction relative to the operation portion.