A tape cassette that includes a housing having a top surface, a bottom surface, a front surface and a pair of side surfaces, a tape that is a print medium housed in the housing, a tape exit that discharges, from the housing, the tape guided in the housing along a predetermined feed path, at least a part of the feed path extending parallel to the front surface, and a type indicator portion provided adjacent to the tape exit and in a specified area of the front surface on an upstream side of the tape exit in a feed direction of the tape, the type indicator portion indicating a type of the tape and including vertical information sections and an aperture formed in at least one of the vertical information sections, the vertical information sections being strip-shaped sections extending along a direction orthogonal to the feed direction.