Black adder may refer to either of two classifications of snake:

  • Vipera berus, a viper species found in Europe and Asia
  • Eastern hognose snake, a basically non-venomous snake found in the United States

Or the British TV series:

  • The Black Adder, first series of the sitcom Blackadder
  • "The Black Adder" (pilot episode), the unaired pilot episode of the series

See also

  • Blackadder (disambiguation)