Svetlana Velmar-Janković

When may refer to:

• When?, one of the Five Ws, questions used in journalism
• WHEN (AM), an Urban Adult Contemporary radio station in Syracuse, New York
• WHEN-FM, the former call letters of radio station WWHT in Syracuse, New York
• WHEN-TV, the former call letters of TV station WTVH in Syracuse, New York

• When (band), a musical project of Norwegian artist Lars Pedersen
• When! Records, a UK record label whose artists include Rob Overseer

• When (album), by Vincent Gallo, or the title song, 2001

• "When" (The Kalin Twins song), 1958
• "When" (Red Vincent Hurley song), the Irish entry for Eurovision 1976
• "When" (Shania Twain song), 1998
• "When", by Amanda Lear from Diamonds for Breakfast, 1980
• "When", by Dodie from Intertwined, 2016
• "When", by Kirk Franklin from Losing My Religion, 2015
• "When", by Megadeth from The World Needs a Hero, 2001
• "When", by Opeth from My Arms, Your Hearse, 1998
• "When", by Perry Como, 1980
• "When", by Rostam from Half-Light, 2017
• "When?", by Spirit from Spirit of '76, 1975
• "When", by Taproot from Welcome, 2002