Uncontrolled Substance is the debut studio album by American rapper and Wu-Tang Clan member Inspectah Deck.

Eventually released four years later, Uncontrolled Substance received mostly positive reviews, and is Inspectah Deck's most critically acclaimed and most commercially successful album to date.

The album features Wu-Tang Clan members U-God and Masta Killa, and appearances from lesser-known affiliates Street Life, Killa Sin, and LA the Darkman.

The album's liner notes state that it is dedicated to Inspectah Deck's late father, Frank Hunter.

According to Inspectah Deck himself, the album managed to reach gold-level sales.