A liquid ejecting apparatus of the present invention has a translationally movable member configured to be connected to a liquid container inserted in a container mounting unit, in link motion with a straight operation of the liquid container when inserting a liquid feed needle through a liquid feed port of the liquid container, translationally advance in the direction parallel with the straight operation, an apparatus side fixing structure for releasably restricting the movement of the liquid container in the mounting state in the pull-out direction, having a stopper pin to be stopped in a guide groove of a container side fixing structure formed in the liquid container, and apparatus side positioning structures installed in the translationally movable member, in cooperation with a container side positioning structure formed in the liquid container, for positioning the liquid container in a predetermined position to the translationally movable member. The liquid ejecting apparatus capable of connecting the liquid container to the translationally movable member arranged in the container mounting unit with high positioning precision is provided.