Metanoia, an Ancient Greek word (μετάνοια) meaning "changing one's mind", may refer to:
- Metanoia (psychology), the process of experiencing a psychotic "breakdown" and subsequent, positive psychological re-building or "healing"
- Metanoia (rhetoric), correction, a rhetorical device
- Metanoia (theology), "conversion" and "reformation" or repentance
- Metanoia (film), a 2021 science fiction film
- Metanoia Films, a film production company
- Metanoia, a word for the act of prostration in Christianity
- Metanoia, a direct climbing route opened in 1991 by Jeff Lowe on the Eiger's north face
- Metanoia: A Speculative Ontology of Language, Thinking, and the Brain, the 2019 book by Armen Avanessian and Anke Hennig
Music
- Metanoia (Australian band), a Christian metal band
- Metanoia (Chilean band), a Christian hardcore band
- Metanoia (For All Eternity album), 2015
- Metanoia (IAMX album), 2015
- Metanoia (Porcupine Tree album), 1998
- Metanoia (Yōsei Teikoku album), 2007
- Metanoia (Persefone album), 2022
- Metanoia, Pt.1, an album by Druha Rika, 2012
- "Metanoia" (song), by MGMT, 2008
- "Metanoia", a song by Gerry Rafferty from Another World, 2000
- "Metanoia", a song by The Human Abstract from Midheaven, 2008
- "Metanoia", a song by King Missile from Happy Hour, 1992
- "Metanoia", a song by Japanese artist Nana Mizuki, 2019
- "Metanoia", a song by Romanian DJ/Producer "Steve", 2020
See also
- Metania, a form of bowing in the Eastern Orthodox Church
