Redback

Redback, Redbacked, Red Back, Red-back or Red-backed may refer to:

In birds:
* Red-backed Button-quail ("Turnix maculosus"), species of bird in the Turnicidae family
* Red-backed hawk ("Buteo polyosoma"), species of bird of prey in the Accipitridae family
* Red-backed Fairy-wren ("Malurus melanocephalus"), species of bird in the Maluridae family, endemic to Australia
* Red-backed Kingfisher ("Todiramphus pyrrhopygia"), species of bird in the Alcedinidae family, endemic to Australia
* Red-backed Mousebird ("Colius castanotus"), species of bird in the Coliidae family
* Red-backed Shrike ("Lanius collurio"), species of bird in the Laniidae family
* Red-backed Thrush ("Zoothera erythronota"), species of bird in the Turdidae family

In other organisms
* Northern Redback Salamander ("Plethodon cinereus"), species of salamander found in eastn North America
* Southern Redback Salamander ("Plethodon serratus"), species of salamander found in the USA
* Redbacked jumping spider ("Phidippus johnsoni"), species of jumping spider found in North America
* Redback spider ("Latrodectus hasselti"), species of spider found in Australia
* Red-backed Bearded Saki ("Chiropotes chiropotes"), species of bearded saki found in South America
* Red-backed Toadlet ("Pseudophryne coriacea"), species of frog found in Australia
* Red-backed vole, several species of vole found in North America, Europe and Asia
** Grey Red-backed Vole ("Myodes rufocanus")
** Hokkaido Red-backed Vole ("Myodes rex")
** Korean Red-backed Vole ("Myodes regulus")
** Northern Red-backed Vole ("Myodes rutilus")
** Southern Red-backed Vole ("Myodes gapperi")
** Tien Shan Red-backed Vole ("Myodes centralis")
** Western Red-backed Vole ("Myodes californicus")

In sport:
* Frankfurt Redbacks, Australian rules football club based in Frankfurt, Germany
* Glasgow Redbacks, Australian rules football club based in Glasgow, Scotland
* Southern Redbacks, Australian cricket team
* Romsey Football Club (nicknamed the "Redbacks"), Australian rules football club based in Romsey, Victoria, Australia

Other:
* Red Back Fever, 1991 album by The Angels
* Redback Networks, telecommunications equipment company
* Texas Redbacks, paper money issued between 1839 and 1840 in the Republic of Texas
* The Australian twenty dollar note, sometimes referred to as a redback