A loophole is a weakness that allows a system to be circumvented.

Loophole may also refer to:

• Loophole (firearm), a protected small opening to discharge a firearm
• "Loophole" (short story), a short science fiction story by Arthur C. Clarke
• Loopholes in Bell test experiments, an explanation for the outcome of certain experiments
• Arrowslit, a loophole in a castle wall to launch arrows

• Loophole (1954 film), a film about a bank teller
• Loophole (1981 film), a film about a bank robbery
• Loophole (2017 film), a film starring Chloe Lukasiak

• "Loophole" (Law & Order: Special Victims Unit), an episode of Law & Order: Special Victims Unit
• "The Loophole" (The Amazing World of Gumball), an episode of The Amazing World of Gumball

• Loophole (album), an album by Sketch Show
• Loophole (Michael Head & The Red Elastic Band album), a 2024 album by Michael Head & The Red Elastic Band