UA or ua may refer to: Units of measure microamp (uA) Astronomical unit Unit of account Music UA (singer) United Abominations, album by Megadeth Places Ukraine, ISO country code Upper Arlington, Ohio Gaming Unearthed Arcana, Dungeons & Dragons sourcebook Unknown Armies, role-play game Organisations ultrAslan, Galatasaray SK fan group Union Association, baseball league United Airlines, IATA airline designator United Artists, film studio United Association, trade union Informatio… (More on Ua)