"Je sais pas" (meaning "I Don't Know") is the second and last commercial single from album D'eux by Celine Dion. It was released on 2 October 1995 in Francophone countries and in December 1995 in selected European countries. In Canada it was a radio-only release (July 1995).

The narrator of the song boasts that she is unafraid to face any number of tribulations and challenges of the body and spirit, but admits life without the one she loves just might be more than she could bear. Dion has stated that this is one of her favorites among her songs, because it reminds her of her feelings for husband René Angélil.

"Je sais pas" was written and produced by Jean-Jacques Goldman and J. Kapler.

Two music videos were made for this song: a non-singing version and a performance (singing) one, both of which were directed by Gregg Masuak in 1995. These music videos can be found on Dion's DVD On ne change pas (2005). Edited versions of the non-singing video were also used for "Next Plane Out" and "Call the Man" singles (none of them was released in France).

An English version of this song, called "I Don't Know" was featured on Falling into You.

Live version of "Je sais pas" from Live à Paris was also released as a single, on 19 May 1997 in the Netherlands to promote that album.

The song was featured on Dion's greatest hits compilation On ne change pas. The live version was a part of two other albums: Live à Paris and Au cœur du stade; the former was also released as a single on 19 May 1997 in the Netherlands to promote the live album. Dion also performed it during the French concerts of her 2008-09 Taking Chances World Tour. The audio and footage of this performance was included in the French edition of Taking Chances World Tour: The Concert CD/DVD. In 2013, the song was performed for the Sans attendre Tour; the Quebec performance was included in the Céline une seule fois / Live 2013 CD/DVD.

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