Disclosed herein is a refrigerator having dividers movable in the left-right direction to efficiently use the internal space of a container and enabling a tray or a shelf used in the fridge room to be used in the freezer room as well by preventing the gap between the dividers from narrowing to a certain distance or less to put the tray on the dividers. A refrigerator includes a main body, a storage compartment formed inside the main body with an open front, a door configured to open and close the open front of the storage compartment, a container contained in the storage compartment to store groceries therein, and a plurality of dividers arranged to be movable inside the container in the left-right direction and dividing the internal space of the container, wherein the divider includes pinion gears configured to guide movement of the divider along guide rails arranged on the front and rear walls of the container, a fixer configured to fix the divider to prevent movement of the divider, and a gap maintaining bar configured to prevent the gap between the dividers from narrowing to a certain distance or less.