Bad Day or Bad Days may refer to:
Film and TV Bad Day (viral video), a viral Internet video Bad Day (2010 film), a direct-to-DVD film Bad Day (2026 film), American action comedy film starring Cameron Diaz "Bad Day" (TMNT 2003 Episode), a 2005 episode of Teenage Mutant Ninja Turtles "A Bad Day", an episode of the TV series Pocoyo
Music "Bad Day" (Daniel Powter song), 2005 "Bad Day" (Fuel song), 2001 "Bad Day" (Justin Bieber song), 2013 "Bad Day" (R.E.M. song), 2003 "Bad Day", by Blackbear from Misery Lake, 2021 "Bad Day", by Blur from Leisure, 1991 "Bad Day", by Carmel from The Drum Is Everything, 1983 "Bad Day", by Juliana Hatfield from Bed, 1998 "Bad Days", by Moby from Ambient "Bad Days", by the Flaming Lips from Clouds Taste Metallic "Bad Days", by Space from Tin Planet "Bad Days", by Tove Lo from Blue Lips