A fixing device includes a fixing rotator, an opposing rotator, a temperature detector, and a support. The fixing rotator has a hollow and heats an image to fix the image onto a recording medium. The opposing rotator forms a fixing nip between the fixing rotator and the opposing rotator. The temperature detector includes an exposed conductive portion. The support has conductivity and is disposed in the hollow of the fixing rotator to support the fixing rotator at the fixing nip. The support has at least one of a recessed portion or an opening at a position facing the exposed conductive portion of the temperature detector.