5V

5V or 5-V may refer to:


 * 5V, IATA code for Everts Air
 * 5V, former IATA code for Lviv Airlines
 * 5V, abbreviation for 5 volts, sometimes incorrectly written as 5v
 * 5V, abbreviation for 5-valve engine
 * ZIS-5V, a model of ZIS-5 (truck)
 * 5V, a model of Toyota V engine
 * 5V, a model series for Intel 80386
 * 5V chess; see Minishogi
 * 5V, the production code for the 1981 Doctor Who serial Logopolis