Aug or AUG may refer to:
- Agricultural University of Georgia, Tbilisi
- Applicative Universal Grammar, a linguistic theory
- Aug., the abbreviation of August, the eighth month of the year in the Gregorian calendar
- Aug, the IMA symbol for the pyroxene mineral Augite
- AUG, the most common start codon, often encoding the amino acid methionine
- Augusta Railroad, defunct Arkansas railroad
- Augusta State Airport in Augusta, Maine (IATA Code: AUG)
- Steyr AUG, an assault rifle