AB, Ab, or ab may refer to: Arts and media. American Bandstand, a music-performance television show. Analecta Bollandiana, an academic journal. Ancienne Belgique, a concert hall in Brussels, Belgium. Business. Business terminology. Akcinė bendrovė, Lithuanian equivalent of an S.A. corporation. Aktiebolag, Swedish for "corporation", similar to AG, Ltd or Inc. Businesses. A & B High Performance Firearms, a defunct sporting firearms manufacturer. AB Airlines, a defunct British airline. AB Groupe, a French broadcasting group.
https://en.wikipedia.org/wiki/AB