The V-1 flying bomb (German: Vergeltungswaffe 1)—also known to the Allies as the buzz bomb, or doodlebug and in Germany as Kirschkern (cherrystone) or Maikäfer(maybug)—was an early pulsejet-powered cruise missile, the very first production aircraft of any type to use a pulsejet for power.

The V-1 was developed at Peenemünde Army Research Center by the Nazi German Luftwaffe during the Second World War. During initial development it was known by the codename Cherry Stone”. The first of the so-called Vergeltungswaffen series designed for terror bombing of London