A printing apparatus in which the movement of a moving body moving inside the housing can be known from outside the housing is provided. The printing apparatus includes a housing, a pair of rotary blades that are disposed inside the housing and move in a scanning direction, a discharge opening that is disposed at the housing so as to pass therethrough and discharges, from within the housing, a medium on which printing is performed inside the housing, and a light source that is disposed inside the housing so as to be elongated in the scanning direction. In the printing apparatus, the pair of rotary blades and the light source are disposed such that reflected light, which is the light emitted by the light source and reflected by the pair of rotary blades, exits the housing through the discharge opening.