Adder (disambiguation)

Vipera berus, the common European adder, is a snake found in Europe and northern Asia.

Adder may also refer to:


 * AA-12 Adder, a Russian air-to-air missile
 * Adder (electronics), an electronic circuit designed to do addition
 * Adder Technology, a manufacturing company
 * Armstrong Siddeley Adder, a late 1940s British turbojet engine
 * Blackadder, a series of BBC sitcoms
 * Golden Axe: The Revenge of Death Adder, a video game
 * HMS Adder, any of seven ships of the Royal Navy
 * Any of several groups of venomous snakes
 * USS Adder, a US submarine