Heisenberg's uncertainty principle is a fundamental concept in quantum physics.

Uncertainty principle may also refer to:

Science

Entropic uncertainty, a concept in information theory Küpfmüller's uncertainty principle, a concept in electronic engineering formulated by Karl Küpfmüller Clinical equipoise, a principle in medical ethics

Media

The Uncertainty Principle (film), a 2002 Portuguese drama The Uncertainty Principle (audio drama), a production based on the British television series Doctor Who "The Uncertainty Principle", a season 1 episode of the TV series Joan of Arcadia "Uncertainty Principle" (Numbers), a 2005 episode of the TV series Numbers "The Uncertainty Principle" (The Spectacular Spider-Man), a 2008 episode of the TV series The Spectacular Spider-Man "The Uncertainty Principle", a 2009 episode of the TV series Holby City The Uncertainty Principle, a 1978 novel by Dmitri Bilenkin Uncertainty Principle, a 2003 novel by Gregorio Morales Uncertainty Principle, a British drone/funeral doom metal one-man band

See also Uncertainty, a situation involving risky, ambiguous or unknown information