An ink cartridge includes an ink bag that is configured to store ink inside, a spout that is provided on the ink bag and includes a hollow portion that leads from a first opening to a second opening, and a case that houses the ink bag, an end portion of the case on a side of the second opening including at least a first corner portion, a second corner portion, and a first surface portion, a width in a first direction being smaller than a width in a second direction in the case, an axial line of the spout being, in the second direction, located closer to one end portion of the case on a side having the first corner portion, and the leading end portion of the spout being located inside of the case with respect to the line connecting the first corner portion and the second corner portion.