What Every Woman Knows

What Every Woman Knows may refer to:


 * What Every Woman Knows (play), a 1908 four-act play written by J. M. Barrie
 * What Every Woman Knows (1921 film), a silent comedy-drama film adapted from the play
 * What Every Woman Knows (1917 film), a British comedy drama
 * What Every Woman Knows (1934 film), an American romantic comedy