UA, ua, or U of A may stand for:* Ukraine (ISO country code) Astronomical unit U-A, a Turkish U-boat captured and commissioned into Nazi German Kriegsmarine during World War II UA (singer), a Japanese singer ultrAslan, a Galatasaray SK fan group Upper Arlington, Ohio, a city in Ohio Urbanized Area Under Armour, a brand of clothing Union Association, a 19th century baseball league in the US Unit of account Unitary authority, a unit of local government in England United Abominations, Me… (More on Ua)