The Qatsi trilogy is the informal name given to a series of three films produced by Godfrey Reggio and scored by Philip Glass:
The titles of all three films are words from the Hopi language, in which the word qatsi means "life."
- Baraka (1992) – an experimental documentary film directed by Ron Fricke, cinematographer on Koyaanisqatsi.
- Chronos (1985) – an experimental film about the passage of time on different scales, also by Fricke.
- Samsara (2011) – Fricke's follow-on project to Baraka.