Halcyon (genus), a type of birdTree kingfisher, a family of birds (Halcyonidae) containing the above genus
Games
Halcyon (role-playing game), an indie role-playing gameHalcyon (console), a video-game consoleMega Man Legends, known in Japan as Rockman DASH Adventurous Spirit of Steel (DASH stands for "Digouter's Adventure Story in Halcyon Days")
Literature
Halcyon (dialogue), a short dialogue attributed to PlatoHalcyon (Stargate Atlantis novel), a novel by James SwallowHalcyon, collection of poems by Gabriele d'Annunzio, published in 1903Halcyon, the fictional capital city of the Thran civilization in the Magic: The Gathering universeHalcyon, a graphic novel written by Marc Guggenheim, Tara Butters, Ryan Bodenheim & Mark Englert, published by Image Comics
Music
Albums
Halcyon Digest, a 2010 album by American band DeerhunterHalcyon (Best Of), a 2005 album by OrbitalHalcyon, a 1996 album by British band SolsticeThe Halcyon Days, by American singer/songwriter Jonathan McQuittyThe Halcyon Days, a 1996 album by Steve Roach, Stephen Kent and Kenneth NewbyHalcyon Days (Bruce Hornsby album)Halcyon Days, an album by BWO (2006)
Songs
"Halcyon Genesis", a song by InMe from the album The Pride"Halcyon" (Chicane song), a 2000 song"Halcyon" (Orbital song), a 1992 song"Halcyon" (Delphic song), a 2010 song from the album 'Acolyte"Halcyon", a song by The Acacia Strain from 3750"Halcyon", a song by ATB from Dedicated"Halcyon", a song by Andy Moor"Halcyon (Beautiful Days)", a song by Mono from Walking Cloud and Deep Red Sky, Flag Fluttered and the Sun Shined"Halcyon (Intro)", a song by Enter Shikari from Common Dreads"Halcyon: The Heavy Silence: In Silent Rain", a song on ...And Oceans' 2002 album Cypher"Halcyon", a song on Jon Hopkins's 2001 album Opalescent"Halcyon Days", a song on Siobhán Donaghy's 2007 album Ghosts."Here's To The Halcyon", an Old 97'] song, from the 2008 album Blame It on Gravity"The Halcyon Days", by The Tea Party from Triptych"Halcyon Days (Where Were You Then?)", by Local H from Whatever Happened to P.J. Soles?"Halcion Daze", an earlier version of the same song, from '99–'00 Demos"Halcyon Days", the first movement of the suite The Three Elizabeths by Eric Coates"Halcyon Daze", a song by Hidden in Plain View from Life in Dreaming"Halcyon Days", a song by the English composer Henry Purcell, written for the semi-opera The Tempest (circa 1695)"Halcyon Days", a song by the band Tages"Halcyon Days", a song by the band Model Engine"Halcyon Days", a song by the band Sikh on their 2007 release, "One More Piece""Halcyon Days", a song by The Spring Standards on their 2010 release, "Would Things Be Different""Halcyon" by Canon Blue"Halcyon", by Crystal Castles (band)"Halcyon", by The Paper Kites
Ships
HMS Halcyon, at least five ships of the British Royal NavyHalcyon class minesweeper, a type of British Royal Navy minesweeperHalcyon 23, a type of sailing ship built in England
Other
John "Halcyon" Styn, John StynHalcyon, California, U.S.Halcyon Castle, a castle in Travancore, Kerala, IndiaHalcyon Gallery, a group of three art galleries in the United KingdomHalcyon Hot Springs, British Columbia or just Halcyon, a former resort in the Kootenay region of British Columbia, CanadaHalcyon Molecular, a company that develops genome sequencing technologiesHalcyon Mountain, a mountain northeast of Halcyon Hot Springs, British ColumbiaHalcyon House, a Georgian style home in Washington, D.C., U.S.Halcyon Monitoring Solutions, a company that monitors performance of computer systemsThe Halcyon Company, a film studioThe Halcyon Days of Symmetry, A Sun City Girls Cloaven Theatre VHS video collage
