Provided is a control panel support mechanism having a first support member attached to an image forming apparatus, a second support member supporting a control panel and axially supported by the first support member to be vertically swingable with respect to the first support member, a lock member slidable towards or away from a swing axis of the second support member, and a biasing unit to bias the lock member to slide towards the swing axis. The first support member has a plurality of engaging grooves each positioned along a radial direction with respect to the swing axis and having an opening at an end of the first support member opposite the swing axis, the plurality of engaging grooves being aligned vertically. The biasing unit biases the lock member so that the lock member enters one of the plurality of engaging grooves through the opening to lock in engagement with the engaging groove.