You Don't Know is the debut single by gospel artist Kierra "Kiki" Sheard, released August 17, 2004.
The song was chosen as the lead single for Sheard's debut album, I Owe You.
The song was specifically written and produced for Sheard by Rodney Jerkins for Darkchild Productions.
In 2001 Kierra's mother, Karen Clark-Sheard, was faced with a life-threatening crisis when a blood vessel burst during a scheduled hernia surgery.
"You Don't Know" cracked the Billboard Hot R&B/Hip Hop singles list at number 84.