Var, VAR, VAr, VaR, or var may refer to:

VAR

• Varna Airport IATA airport code
• Vacuum arc remelting, a process for production of steel and special alloys
• Value-added reseller, a company that adds some feature(s) to an existing product(s), then resells it, common in the electronics industry
• Vector autoregression, an econometric method of analysis
• Visual Aural Radio Range, VAR, a radio navigation aid for aircraft, predecessor to VHF omnidirectional range
• Free Anti Revolutionary Party (Vrije Anti Revolutionaire partij), a Dutch political party

In Norse mythology, Vár or Vór (Old Norse, meaning either "pledge" or "beloved") is a goddess associated with oaths and agreements. Vár is attested in the Poetic Edda, compiled in the 13th century from earlier traditional sources; the Prose Edda, written in the 13th century by Snorri Sturluson; and kennings found in skaldic poetry and a runic inscription. Scholars have proposed theories about the implications of the goddess.

VaR redirects here. For the statistical technique VAR, see Vector autoregression. For the statistic denoted Var or var, see Variance.

In botanical nomenclature, variety (abbreviated var.; in ) is a taxonomic rank below that of species and subspecies but above that of  form. As such, it gets a three-part infraspecific name.

In electric power transmission and distribution, volt-ampere reactive (var) is a unit by which reactive power is expressed in an AC electric power system. Reactive power exists in an AC circuit when the current and voltage are not in phase. The correct symbol is var and not Var, VAr, or VAR, but all three terms are widely used, and VAR is widely used throughout the power industry infrastructure. The term var was proposed by the Romanian electrical engineer Constantin Budeanu and introduced in 1930 by the IEC in Stockholm, which has adopted it as the unit for reactive power.