An ink cartridge includes a bag-shaped ink bag storing ink inside and having a spout through which the ink can be drawn out, a substantially box-shaped case housing the ink bag and having at least a first wall portion and a second wall portion arranged to oppose each other, a first leg portion protruding from an outer surface of the first wall portion and being disposed on a first end of the first wall portion positioned in a longitudinal direction and separated from both ends positioned in a first direction of the first wall portion, and a second leg portion protruding from the outer surface of the first wall portion and being disposed in a position separated from the first leg portion on the first end of the first wall portion and separated from the both ends in the first direction.