I Don't Know can refer to:
"I Don't Know" (Fiestar song), 2013
"I Don't Know" (Honeyz song), 2000
"I Don't Know" (Joanne song), 2001
"I Don't Know" (Mika Nakashima song), 2008
"I Don't Know" (The Sheepdogs song), 2010
"I Don't Know" (Willie Mabon song), 1952
"Je sais pas", by Celine Dion
"I Don't Know!", by J-pop duo BaBe, 1987
"I Don't Know", by The Beach Boys from the album The Smile Sessions, 2011
"I Don't Know", by Beastie Boys from the album Hello Nasty
"I Don't Know", by Dredg, 2009
"I Don't Know", by The Esquires. 1969
"I Don't Know", by James Brown, 1956
"I Don't Know", by Lisa Hannigan from the album Sea Sew, 2009
"I Don't Know", by Lostprophets from the album Start Something
"I Don't Know", by Meek Mill
"I Don't Know", by Ozzy Osbourne from the album Blizzard of Ozz, 1980
"I Don't Know", by Paul Revere & The Raiders from the album Alias Pink Puzz, 1969
"I Don't Know", by Pomplamoose from their EP 3 New Songs Woot!, 2010
"I Don't Know", by The Replacements from the album Pleased to Meet Me, 1987
"I Don't Know", by Slum Village from the album Fantastic, Vol. 2, 2000
"I Don't Know", by Usher from the album 8701
I Don't Know, a 1972 short film directed by Penelope Spheeris
I Don't Know (Nie wiem), a 1977 film directed by Krzysztof Kieślowski
Agnosticism, a philosophy of thought which states that certain things are unknown or unknowable
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