"I Didn't Know" is a song by Serhat from the Eurovision Song Contest 2016.
I Didn't Know may also refer to:
"I Didn't Know", a song by Ph.D. from the album Is It Safe?, 1983 "I Didn't Know", a song by Phish from the album Live Phish Volume 20, 2003 "I Didn't Know", a 2010 song by Alex Lambert
See also I Don't Know (disambiguation)