SAS AB, trading as SAS Group, is an airline holding company headquartered in the SAS Frösundavik Office Building in Solna Municipality, Sweden. It is the owner of the airlines Scandinavian Airlines and SAS Connect. SAS once owned 19.9% of the now defunct Spanish airline Spanair as well as shares in Estonian Air and Skyways Express. SAS Group is partially owned by the governments of Sweden and Denmark with a 14.82% and 14.24% holding, respectively. The remaining 70.92% is held by private shareholders, of which Foundation Asset Management owns 6.50%. The company is listed on the Oslo Stock Exchange, the Stockholm Stock Exchange, and the Copenhagen Stock Exchange.

The SAS Frösundavik Office Building is an office building in Frösundavik, Solna Municipality, Sweden, north of Stockholm. It serves as the head office of Scandinavian Airlines (SAS) and the SAS Group. The SAS head office was for a brief period located in a different building on the property of Stockholm Arlanda Airport in Sigtuna Municipality.