Fiat Lux (Latin, 'Let there be light'), comes from third verse of the Book of Genesis.

Fiat Lux may also refer to:

• Fiat Lux (band), a 1980s English synthpop band
• "Fiat Lux", a poem by Lynda Hull
• Fiat Lux, a science fiction novella by Walter M. Miller, Jr.
• Fiat Lux (UFO religion), a cult based in Germany
• Fiat Lux (film), a 1923 Austrian film

• Let There Be Light (disambiguation)

This disambiguation page lists articles associated with the title Fiat Lux.
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