2V

2V or 2-V may refer to:


 * 2V, IATA code for Amtrak
 * 2V angle, curved isogyre differences in a conoscopic interference pattern in optical crystallography
 * P-2V, a model of Lockheed P-2 Neptune
 * An-2V, a model of Antonov An-2
 * 2V (V-69), manufacturer's designation for Venera 5 spacecraft
 * 2VLY, call sign for Power FM 98.1