Atter is poison or venom.
Atter may also refer to:
People Tom Atter Mahmoud Atter Abdel Fattah
Places Atter Shisha Atter (Osnabrück), district in the west of Osnabrück, Lower Saxony, Germany
Other Ätter, Norse clans, a social group based on common descent Gigantochloa atter, a species of bamboo
See also Otter (disambiguation)