A printing apparatus includes: a transportation unit that transports a recording medium having flexibility; a head unit that has a liquid droplet ejection head which ejects an ink onto the recording medium transported by operation of the transportation unit, and a carriage which supports the liquid droplet ejection head; a movement unit that moves the head unit in a direction orthogonal to a transportation direction of the recording medium with respect to the recording medium; and a warpage straightening member that straightens a warpage to disappear when the warpage in a degree to interfere with the head unit which is moved by operation of the movement unit, occurs in the recording medium.