Adder may refer to: *

AA-12 Adder The Vympel NPO R-77 missile (NATO reporting name: AA-12 Adder) is a Russian active radar homing beyond-visual-range missile, beyond-visual-range air-to-air missile. It is also known by its export designation RVV-AE. It is the Russian counterpart ...

, a Russian air-to-air missile *

Adder (electronics) An adder, or summer, is a digital circuit that performs addition of numbers. In many computers and other kinds of processors adders are used in the arithmetic logic units (ALUs). They are also used in other parts of the processor, where they ar ...

, an electronic circuit designed to do addition * Adder Technology, a manufacturing company *

Armstrong Siddeley Adder The Armstrong Siddeley ASA.1 Adder was an early British turbojet engine developed by the Armstrong Siddeley company and first run in November 1948. Design and development The Adder, a turbojet derivative of the Armstrong Siddeley Mamba, was or ...

, 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 ** Common European adder, found in Europe and northern Asia * USS ''Adder'', a US submarine

See also