3V

3V or 3-V may refer to:


 * TNT Airways S.A.'s IATA code
 * 3V, a model of Toyota V engine
 * SSH 3V (WA); se Washington State Route 241
 * S281-3V, a model of Saleen S281
 * 3V (V-70), manufacturer's designation for Venera 7
 * 3V (V-72), manufacturer's designation for Venera 8