IV may refer to:

Businesses and organizations

* Immigration Voice, an activist organization *Industrievereinigung, Federation of Austrian Industry * Intellectual Ventures, a privately held intellectual property company *

InterVarsity Christian Fellowship InterVarsity Christian Fellowship/USA is an inter-denominational, evangelical Christian campus ministry founded in 1941, working with students and faculty on U.S. college and university campuses. InterVarsity is a charter member of the Interna ...

Irish Volunteers The Irish Volunteers ( ga, Óglaigh na hÉireann), sometimes called the Irish Volunteer Force or Irish Volunteer Army, was a military organisation established in 1913 by Irish nationalists and republicans. It was ostensibly formed in respon ...

, a military organization * Italia Viva, an Italian centrist political party, led by former prime minister Matteo Renzi

Music

* Subdominant, in music theory

Recordings

* ''IV'' (The 1975 EP), 2013 * ''IV'' (The Aggrolites album), 2009 * ''IV'' (Angband album), 2020 * ''IV'' (BadBadNotGood album), 2016 * ''IV'' (Black Mountain album), 2016 * ''IV'' (Cypress Hill album), 1998 * ''IV'' (Diamond Rio album), 1996 * ''IV'' (Goatsnake album), 1998 * ''IV'' (Godsmack album), 2006 * ''IV'' (Hiroyuki Sawano album), 2021 * ''I.V.'' (Loma Prieta album), 2012 * ''IV'' (The Lookouts album), 1990 * ''IV'' (Maylene and the Sons of Disaster album), 2011 * ''IV'' (Ton Steine Scherben album), 1981 * ''IV'' (The Stranglers album), 1980 * ''IV'' (To/Die/For album), 2004 * ''IV'' (Veruca Salt album), 2006 * ''IV'' (Winger album), 2006 * "I.V." (X Japan song), an X Japan song, 2008 * ''IV'' (Željko Joksimović album), 2005 *''

Faust IV ''Faust IV'' is the fourth studio album by the German krautrock group Faust, released in 1973. The album is included in the book '' 1001 Albums You Must Hear Before You Die'', where it is referred to as a "krautrock classic". This was the las ...

'', 1973 *'' Good Apollo, I'm Burning Star IV, Volume One: From Fear Through the Eyes of Madness'', by Coheed and Cambria, 2005 *'' Led Zeppelin IV'', 1971 *'' Toto IV'', 1982

Places

Ivory Coast Ivory Coast, also known as Côte d'Ivoire, officially the Republic of Côte d'Ivoire, is a country on the southern coast of West Africa. Its capital is Yamoussoukro, in the centre of the country, while its largest city and economic centre is ...

, a country * IV postcode area, the Inverness postcode area in the UK * Isla Vista, an unincorporated community in the United States near Santa Barbara, California

In science and technology

Intravenous therapy Intravenous therapy (abbreviated as IV therapy) is a medical technique that administers fluids, medications and nutrients directly into a person's vein. The intravenous route of administration is commonly used for rehydration or to provide nutri ...

, a route of administration of a drug * I–V curve, current–voltage curve characteristic * Implied volatility, a term in financial mathematics * Independent variable, in mathematical and statistical modeling *

Independent verification systems Independent verification (IV) systems or Independent Dual Verification (IDV) are voting machines that produce at least two independent auditable records of votes where the second record is used to check the first. To be considered "independent" at ...

, in voting machines * Initialization vector, in cryptography * Instrumental variable, in statistics * Intrinsic value (finance), of an option or stock * Intrinsic viscosity * Trochlear nerve, the fourth cranial nerve

Other uses