The speed of light is a physical constant, the rate at which light travels in a vacuum.

Look up speed of light in Wiktionary, the free dictionary.

Speed of Light may also refer to:

• Speed of light (cellular automaton), the greatest rate of information propagation in a cellular automaton

• "Speed of Light", a song by the band Orchestral Manoeuvres in the Dark, from their 1991 album Sugar Tax
• "Speed of Light", a song by guitarist Joe Satriani, from his 1993 album Time Machine
• "Speed of Light", a song by the band Stratovarius, from their 1996 album Episode
• "Speed of Light", a song by the band van Canto, from their 2008 album Hero
• "Speed of Light", a song by the band Teenage Fanclub, from their 1997 album Songs from Northern Britain
• "Speed of Light" (Speed song), a single by South Korea boy group Speed
• Speed of Light (album), a 2009 album by Corbin Bleu
• "Speed of Light" (Iron Maiden song), 2015

• Faster than the speed of light (disambiguation)
• Lightspeed (disambiguation)
• The Speed of Darkness (disambiguation)

This disambiguation page lists articles associated with the title Speed of light.
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