"When the Lights Are Out" is a song by the British rock band Slade, released in 1974 as the fourth and final single from their fourth studio album Old New Borrowed and Blue (known as Stomp Your Hands, Clap Your Feet in America). The single was released in America and Belgium only. The song was written by lead vocalist Noddy Holder and bassist Jim Lea, and produced by Chas Chandler.