SV, Sv, sv, etc. may refer to:

Places and language

* El Salvador, ISO 3166-1 country code SV * Province of Savona, (vehicle registration plate code), Italy * South Vietnam, an extinct state * Svalbard, Norway, FIPS country code SV * Swedish language, ISO 639-1 language code sv * Silicon Valley, a region in northern California noted for high tech and social media companies * Spokane Valley, a valley in Washington state * Spokane Valley, Washington a city in the United States * ''sub verbo'' or ''sub voce'', a Latin phrase, 'under the word/heading'

Politics

* Socialist Left Party (Norway), a political party * Slovaks Forward (''Slováci vpred''), a political party in Serbia * Supplementary vote, an electoral system

Science and technology

* Sievert, symbol Sv, a unit of ionizing radiation dose * Starting variable, or initialization vector, in cryptography * Stroke volume, in cardiovascular physiology * .sv, a filename extension of SystemVerilog files * .sv, the Internet country code top-level domain for El Salvador * Svedberg unit, symbol S or Sv, a non-metric unit for sedimentation coefficient * Sverdrup, symbol Sv, a non-SI unit of flow

Sports

* Save (baseball), abbreviated SV * ''Sportverein'' ('sports club'), for example Hamburger SV * Save percentage, SV%, a statistic in many sports

Transportation

Companies

* Saudia, Saudi Arabian Airlines, IATA code SV * Silver Line (Washington Metro) * Società Veneta, an Italian public transport company

Vehicles

* MG XPower SV, a sports car by MG Rover * ''Super veloce'', a variety of Lamborghini car such as the Lamborghini Aventador SV, Lamborghini Murcielago SV, Lamborghini Diablo SV, or Lamborghini Miura SV * S-V, a stage of the Saturn I rocket * Ship_prefix, Name prefix of ships SV or S/V for Sailing_ship, sailing vessel

Other uses

* ESP SV, a series of electric guitars * Pokémon Scarlet and Violet, ''Pokémon Scarlet'' and ''Violet'', ''Pokémon'' video games released in 2022 * Shareholder value * Significantly viewed out-of-market television stations in the United States, a classification for television stations * Stattkus-Verzeichnis, a catalogue of the musical works of Claudio Monteverdi