A liquid container that has a container body storing a liquid to be supplied to a liquid consuming apparatus and that is detachably mounted on a container mounting portion of the liquid consuming apparatus, wherein a liquid supply port for sending out the liquid to be supplied to the liquid consuming apparatus is formed on a front end surface in an insertion direction of the container body having a substantially rectangular shape, wherein a circuit board having a contact point with the liquid consuming apparatus is formed on one side surface perpendicular to one corresponding short side of the front end surface in the insertion direction, and wherein a container fixation structure for releasably regulating a movement of the container body in a direction opposite to the insertion direction thereof in cooperation with an apparatus fixation structure formed on the container mounting portion is formed on the other side surface perpendicular to the other corresponding short side of the front end surface in the insertion direction in a state where the container body is mounted on the container mounting portion against an urging force in the direction opposite to the insertion direction.