Redshift refers to a phenomenon of electromagnetic waves such as light, and is used in astronomy and physics. See also its analogue, blueshift. For astronomical observations, see^*.

Red shift can refer to:

• A photochemical change — see bathochromic shift
• A computerised planetarium created by Focus Essential — see Red Shift (planetarium)
• A novel by Alan Garner — see Red Shift (novel)
• A work by post-minimalist composer Lois V Vierk, named after the astronomical phenomenon redshift — see Red Shift (Vierk)
• A Marvel Comics character, one of Galactus's Heralds — see Red Shift (comics)
• An English folk group
• An English electronic music group; see Red Shift (music)
• A song by North Carolina hardcore band Hopesfall from the album The Satellite Years
• A song by Paradise Lost (band) from the album Paradise Lost (album).