Abstract: A sheet film feeder according to the present invention is incorporated in an X-ray photographing apparatus and feeds a sheet film from an unphotographed film housing magazine to a sheet film holder at a waiting position. A suction mechanism for sucking an unphotographed film is provided to the sheet film feeder. In addition, the feeder has a transportation apparatus for transporting the suction mechanism from the unphotographed film housing magazine to the sheet film holder, and a rotation apparatus for rotating the suction mechanism through approximately 90.degree. when the suction mechanism is transported from the unphotographed film housing magazine to the sheet film holder. Therefore, the suction mechanism is rotated approximately 90.degree. and transported from the magazine to the holder. For this reason, the unphotographed film is rotated from the vertical to horizontal state and fed to the holder without damage.