A tape cassette (30) includes a cassette case (31). A first tape area (400) is provided in the cassette case (31). A tape roll (571) that is a wound tube tape (57) is accommodated in the first tape area (400). A wall (501) is provided along an outer perimeter of the first tape area (400) and shapes a feed path for the tube tape (57) that extends from the tape roll (571). A guide portion (505) is provided downstream from the wall (501) in a feed direction and is in contact with the tube tape (57). Walls (502, 503, 504) are provided between the wall (501) and the guide portion (505). The wall (502) is provided in a position along a virtual line (523). The virtual line (523) connects the wall (501) and the wall (504). The walls (502, 503, 504) face one surface of the tube tape (57).
