An operation input device includes a detection part configured to detect an operation performed by a detected object, an operation part including an operation lever attached to the detection part and configured so as to allow an operation of the operation part in a first direction and a second direction intersecting with the first direction, and a display control part configured so as to control a display device to display on a display screen a first region that displays a first image based on the operation performed by the detected object, a second region that displays a second image based on the operation of the operation lever in the first direction, and a third region that displays a third image based on the operation of the operation lever in the second direction.