A printing apparatus includes a printing unit configured to perform printing onto a medium, a supporting unit configured to support the medium to be printed by the printing unit, a pressing unit configured to be attachable and detachable with respect to the supporting unit and to be attached to the supporting unit to press the medium supported by the supporting unit, and a retainer configured to retain the pressing unit that is removed from the supporting unit. The retainer has a first portion on which the pressing unit is placed, and a second portion positioned closer to a leading end of the retainer than the first portion and above the first portion in a vertical direction.