An inkjet printer includes: a transfer path configured to transfer a recording medium therein: an inkjet head disposed with a gap from the transfer path, and configured to discharge ink toward the recording medium being transferred in the transfer path; a gap adjuster configured to adjust the gap; a guide disposed upstream of the inkjet head in a transfer direction of the recording medium, and configured to prevent the recording medium from being uplifted from the transfer path; and a guide mover configured to move the guide toward the inkjet head in the transfer direction in response to an increase in the gap by the gap adjuster.