Corporations generally •
S.A. (corporation) () a type of joint-stock company in civil law countries • ("
Joint-stock company" in Polish)
Military and paramilitary organizations •
Soviet Army, army of the Soviet Union • (SA), a paramilitary wing of the German Nazi Party (NSDAP), also known as the
Brownshirts Political organisations •
Socialist Action (disambiguation), several organisations •
Socialist Alliance (Australia), a Socialist political party • Socialist Alliance (England), a political party in England •
Socialist Alternative (Australia), a Marxist political organisation
Other businesses and organizations •
System Architect, an enterprise architecture product •
San Antonio Spurs, a basketball team in the U.S. National Basketball Association •
The Salvation Army, an international church and charity •
Sexaholics Anonymous, a sex-addiction recovery group based on the 12 steps of Alcoholics Anonymous •
Scouting America, main scouting movement in the United States, formerly Boy Scouts of America •
Shooting Australia, governing body for target shooting sports in Australia •
Smokers Anonymous •
South African Airways (IATA airline designator: SA) •
Sports Authority, a defunct U.S. sporting goods retailer •
Success Academy Charter Schools, term commonly abbreviated to 'Success Academy' ==Places==