The present invention provides a disc cartridge, in which a shutter member can easily be installed to a cartridge body. The disc cartridge includes a body housing a rotatable disc, a driving aperture, a write and/or read aperture, and the shutter member. The shutter member includes a shutter plate portion, a movement guide piece, support pieces, a sliding guide portion, and engagement pieces. The shutter plate portion opens and closes the write/read aperture. The support pieces are spaced in a sliding direction of the shutter plate portion, are bent from the movement guide piece and supported on the sliding guide portion. The engagement pieces project towards the support pieces to the shutter plate portion holding the sliding guide portion between the engagement pieces and the support pieces. The sliding guide portion includes a guide recess and a guide rail portion. A tapered cut is formed in the guide recess.