Half Light may refer to:Galaxy effective radius or half-light radius Half Light (film), a 2006 British mystery-horror drama Half-Light (album), by Rostam, 2017 "Half Light", 2005 "Half Light", 2014 Half-light: Collected Poems 1965–2016, by Frank Bidart, 2017 "Half Light", a song by Porcupine Tree from Deadwing "Half Light I" and Half Light II ", songs by Arcade Fire from The Suburbs