Who Knows may refer to:
'Who Knows? (video), a DVD by Andrew W.K.
Who Knows? (film) (Va savoir), a 2001 French romantic comedy-drama
Who Knows? (game show), a 1959 Canadian television panel game quiz show
"Who Knows", a song by Avril Lavigne from Under My Skin
"Who Knows", a song by Natasha Bedingfield from N.B.
"Who Knows", a song by Jimi Hendrix from Band of Gypsys
"Who Knows?", a short story by Guy de Maupassant, published in 1890
