A cooling system for an oven appliance is provided. The oven appliance includes an insulated chamber positioned within a cabinet such that a plurality of air flow passageways are defined therebetween. A control panel is positioned at a top, front of the oven appliance and defines an electronics chamber which is in fluid communication with a side air flow passageway. An exhaust duct is positioned between the insulated chamber and the cabinet and is placed in fluid communication with the electronics chamber. An exhaust fan is positioned within the duct and is configured for drawing cooling air through the side air flow passageway, into the electronics chamber, and through the exhaust duct to an outlet where it is exhausted from the oven appliance.