No One Knows is an extended play (EP) by Hong Kong actress and singer Stephy Tang (鄧麗欣, 邓丽欣), released on July 16, 2010 by Gold Typhoon.

[1] The title song was released as the first single and MV; it is the first of four tracks and was written by Roxanne Seeman, Kine Ludvigsen-Fossheim, and Olav Fossheim, with Cantonese lyrics by Yan Kin Keung.

The attitudes of the songs are focused on issues of modern women and their values of love and living in the material world.

[4] Tang trained secretly for six months in preparation for the release of "No One Knows", an album of uptempo dance tracks.

Tang gave a lively dance performance in the rain, wearing a provocative, revealing outfit.

A reissue of the EP titled No One Knows (Stephy x Y.E.S.- 3D感官版) was released by Gold Typhoon Hong Kong on February 1, 2011.