To provide a roll paper holder which is safe to use and with which paper drawn by a length to use is easily and surely cut off by one hand, even if the paper is raised upward to the right or left to be cut.

The roll paper holder 1 is used to load roll paper, successively draw the roll paper from the roll end by a desired length, and cut off the roll paper. The roll paper holder 1 includes a supporting cylinder 2 for fitting a roll core of the roll paper, and a swing lever 3 provided at the supporting cylinder 2. The swing lever 3 includes a cutting bar 6, and the cutting bar 6 has continuous wavy round teeth 7.