V1

V1 can refer to the first version of anything.

V1, V01 or V-1 may also refer to:

In aircraft

 * V-1 flying bomb, a World War II German weapon
 * V1 speed, the maximum speed at which an aircraft pilot may abort a takeoff without causing a runway overrun
 * Vultee V-1, an American single-engine airliner of the 1930s
 * Fokker V.1, a German parasol monoplane experimental fighter prototype, built in 1916
 * The first prototype/experimental (Versuchs) airframe of nearly any German WW II-era military aircraft

Vessels

 * V1-class destroyer, a German World War I destroyer class
 * USS V-1, 1924–1931 designation of the USS Barracuda (SS-163), first of the US "V-boat" series of submarines
 * V1, a rudderless single-paddler outrigger canoe
 * Panzer VIII Maus prototype

In medicine

 * V1, the primary visual cortex
 * V1, the ophthalmic nerve, first division of the trigeminal nerve
 * V1, one of six precordial leads in electrocardiography

Other uses

 * Base form (V1) of an English verb
 * ATC code V01 Allergens, a subgroup of the Anatomical Therapeutic Chemical Classification System
 * V1 (classification), a Paralympic archery classification for people with visual disabilities
 * LNER Class V1, a 1930–1939 British 2-6-2 tank engine class
 * NER Class V1, a class of British steam locomotives officially classified V/09, but classified V1 in some sources
 * Nikon 1 V1, a camera
 * V1 Gallery, in Copenhagenany
 * ITU-T V.1, a telecommunication recommendation
 * V1, a visual query language for property graphs
 * Z1 (computer), previously known as V1
 * V1 (film), a 2019 Indian film
 * V1, main protagonist of the video game Ultrakill