Disclosed are a refrigerator and a folding guide device provided therein. The refrigerator includes a body including a storage compartment, a door that opens and closes the storage compartment, a support provided to be changeable in position to an unfolded position to be unfolded outward from the storage compartment and a folded position to be folded in the storage compartment, a folding guide device interlinked with an opening and closing operation of the door to apply a rotational force for changing the position of the support to the support. Here, the folding guide device includes a slider pressurized by the door and linearly moved, and a conversion outputter provided to connect the slider with the support and configured to convert a linear force input by the slider that linearly moves into a rotational force for changing the position of the support and output the rotational force.