An image forming apparatus includes an ejection stacking section, a cooling target unit, and a cooling fan. The cooling target unit is disposed below the ejection stacking section. The cooling fan sends air to flow between the cooling target unit and the ejection stacking section. The ejection stacking section includes an opening, a movable member, and a biasing member. The movable member is movable between a closed position and an open position. The biasing member biases the movable member toward the closed position. In response to that the recording mediums are stacked on the ejection stacking section, the movable member moves toward the open position against a biasing force of the biasing member to allow the air sent from the cooling fan to flow through the opening so as to cool a lower surface of the recording mediums stacked on the ejection stacking section.