A for Andromeda is a British television science fiction drama serial first made and broadcast by the BBC in seven parts in 1961. Written by cosmologist Fred Hoyle, in conjunction with author and television producer John Elliot, it concerns a group of scientists who detect a radio signal from another galaxy that contains instructions for the design of an advanced computer. When the computer is built, it gives the scientists instructions for the creation of a living organism named Andromeda, but one of the scientists, John Fleming, fears that Andromeda's purpose is to subjugate humanity.

Plot

The opening titles of each episode are prefaced by a television interview in which Professor Ernst Reinhart (Esmond Knight) looks back on the events of the serial.