Grayback or Greyback may refer to:
- Grayback (fish)
- Dowitcher, a wading bird
- An American duck, Aythya americana
- A character in the Battle Realms: Winter of the Wolf video game expansion pack
- Greyback, an American Civil War Confederate currency
- USS Grayback, either of two US Navy submarines
This disambiguation page lists articles associated with the title Grayback.
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