Thermally actuated vents for electronic devices. An embodiment of an apparatus includes a vent having a first position and a second position, wherein the first position is an open position and the second position is a closed position; a muscle wire, a first end of the muscle wire being coupled with a connection to the vent and a second end of the muscle wire being coupled with an anchor point; and a tension element, a first end of the tension element being coupled with the vent at a connection point. The muscle wire is to apply a force to the vent to move the vent to the open position upon the muscle wire entering a contracted state, and the tension element pulling the vent to the closed position upon the muscle wire entering a relaxed state.