Blueback may refer to any of a number of unrelated fish species with blue coloration (particularly on the dorsal side), including:
Blueback may also refer to:
- Blueback, a 1997 novel by Australian author Tim Winton, which explores universal human themes such as love for family, passion, growing up, and belonging.
- USS Blueback (SS-326), a US Navy submarine of the Balao-class.
- USS Blueback (SS-581), a Barbel-class submarine and the last non-nuclear submarine to join the US Naval Fleet.