A2B

A2B may refer to:


 * A2B, Adenosine A2B receptor
 * A2B Australia, a taxi operator
 * A2B Bicycles, an electric bicycle company
 * A2B-online, an intermodal trailer and container shipping line based in Netherlands and the UK.
 * Adyar Ananda Bhavan, a chain of restaurants and confectioners in India
 * Automotive Audio Bus, a serial data bus standard for vehicles