An arclight or arc lamp is a lamp that produces a bright light by generating an electric arc across two electrodes.
Arclight, Arc Light or arc light may also refer to:
Arts and entertainment
Characters
- Arclight (comics), a mutant super-villain character from Marvel Comics
- Arclight (DC Comics), a super-villain character from DC Comics
- Arclight family, characters from the Yu-Gi-Oh! Zexal
Music
- Arc Light (album), a 2009 album by Lau
- Arclight (album), a 2016 album by Julian Lage
- Arclight, the third album by Swedish rock band Silverbullit
- "Arclight", a song by VNV Nation, from the album Empires
- "Arclight", a song by Deathstars, from the album Night Electric Night
Theaters
- ArcLight Hollywood, a cinema complex in Hollywood, California
- ArcLight Sherman Oaks, a cinema complex in Sherman Oaks, California
- Arclight Theatre, an off-off-Broadway theater in New York, New York
Other arts and entertainment
- Arc Light (novel), a 1994 techno-thriller novel by Eric Harry about an accidental nuclear war between the United States and Russia
- Arc Light (film), 1988 Chinese film
- Arclight (novel), a novel series by Josin L. McQuein
Biology
- ArcLight (biology), a genetically-encoded voltage indicator
Military
- ArcLight (missile), a development program of the Defense Advanced Research Projects Agency to develop a replacement for the Tomahawk missile
- Operation Arc Light, the 1965 deployment of B-52 Stratofortress bombers to Guam
Other uses
- Arclight Fabrication, a Aaron Kaufman owned business