Leidos, an American government contractor, known as Science Applications International Corporation (SAIC) from 1969 to 2013
SAIC Motor, a Chinese automaker formerly named Shanghai Automotive Industry Corporation
School of the Art Institute of Chicago, one of America's largest accredited independent schools of art and design, located in the Loop in Chicago, Illinois
Special Agent in Charge, a detective or investigator for a state, county, municipal, federal or tribal government
State Administration for Industry and Commerce, the authority in the People's Republic of China responsible for advancing legislation concerning the administration of industry and commerce