V12
V12 or V-12 may refer to:

Aircraft
Mil V-12, a Soviet heavy lift helicopter
Pilatus OV-12, a planned American military utility aircraft
Rockwell XFV-12, an American experimental aircraft project
Škoda-Kauba V12, a Czechoslovak experimental aircraft project
Vultee V-12, an American-designed bomber

Automobiles
Cadillac V-12, an American car
Lagonda V12, a British car

Other uses
V12 engine, an engine with twelve cylinders
Simpiwe Vetyeka (born 1980), South African boxer
V-12 Navy College Training Program, of the United States Navy during World War II
Victor V12, a calculator
V12, a grade in bouldering
V12, a personal history of certain other diseases, in the ICD-9 V codes