No One Knows is an EP by Cantonese pop singer and Hong Kong actress Stephy Tang, released by Gold Typhoon on July 16, 2010. The title song was released as the first single. It is the first of four tracks. No One Knows is written by Roxanne Seeman, Kine Ludvigsen-Fossheim, and Olav Fossheim. Stephy sings all four tracks in Cantonese.