A monitor apparatus includes at least one pair of monitor main bodies to display a picture, a stand to support the monitor main bodies with respect to an installation surface, at least one pair of supporting arms provided between the monitor main bodies and the stand to support the monitor main bodies with respect to the stand, a first hinge provided between the stand and each supporting arm to swivelly couple the supporting arm to the stand, and a second hinge provided between each monitor main body and each supporting arm to swivelly couple the monitor main body to the supporting arm. In the monitor apparatus, the monitor main body can rotate not only near to a user but also at various angles.