Blackback (disambiguation)
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A blackback is a sexually mature male gorilla of up to 11 years of age.
Blackback may also refer to:
- Alosa kessleri, a herring of the family Clupeidae
 - Great blackback, a very large gull which breeds on the European and North American coasts and islands of the North Atlantic
 - Lesser blackback, a large gull which breeds on the Atlantic coasts of Europe
 - Kelp gull, a large gull that breeds throughout the Southern Hemisphere
 
See also
- Black back, a flatfish of the family Pleuronectidae