The Full Form of B&O is Bang & Olufsen.

Bang & Olufsen (B&O) (stylized as BANG & OLUFSEN) is a high end luxury Danish consumer electronics company that designs and manufactures audio products, television sets, and telephones. It was founded in 1925 by Peter Bang and Svend Olufsen, who designed a radio to work with alternating current, a product of significance at a time when most radios were still running on batteries.

In May 2015, HARMAN International Industries (which later became a subsidiary of Samsung), announced the completion of its acquisition of Bang & Olufsen Automotive car audio business. In March 2017, Tymphany, an audio ODM based in Hong Kong and with manufacturing operations in Dongchen, announced the acquisition of the engineering and manufacturing operation in the Czech Republic from Bang & Olufsen