Abstract: An illuminated tire valve cap includes one or more loops or sockets for removably receiving a corresponding number of small, chemiluminescent rod(s) therein. The chemiluminescent element(s) is/are separably replaceable from the valve cap, thereby allowing retention of the cap for further use when spent chemiluminescent elements have been removed. The chemiluminescent element retaining loop(s) may be provided across the top or along the side(s) of the valve cap, at any practicable orientation desired. The present illuminated valve cap “dresses up” the appearance of a vehicle wheel (automobile, truck, motorcycle, bicycle, etc.) without requiring relatively fragile, heavy electrically powered systems, which would unbalance the wheel and tire assembly and which would not provide the desired reliability. The present illuminated valve cap is also valuable in locating the cap at night or in poor lighting, for checking tire pressure and other tire maintenance tasks.