Same-sex attraction

Sikh Student Association, an intercollegiate level student organization promoting awareness of the Sikh religion. It is located on several United States University campuses.

Sickle-cell anemia

Authentication Single Signin

Singapore Scout Association

Schönhage-Strassen algorithm, a multiplication algorithm.

Static single assignment form, an intermediate representation used in compilers

The Start of Selected Area control code in the C1 control code set.

Social Security Administration

Singular spectral analysis - see Short-time Fourier transform

Sub-Saharan Africa

Singapore Soka Association

SubStation Alpha, a popular video subtitle editor which allows some advanced display features like positioning, karaoke, and style management

The Secular Student Alliance

The IATA airport code for Deputado Luís Eduardo Magalhães International Airport in Salvador, Bahia, Brazil,

Serial Storage Architecture

School of Social Service Administration

Saitama Super Arena

Sat Sri Akal, a Sikh Greeting, which means "Immortal God is Truth!"

Soaring Society of America

Social Security Agency

The company SSA Global Technologies

Spanish Speaking America, see Hispanic America

Sulfosalicylic acid

Slovak Society of Actuaries

Somali Salvation Army, the Ali Mahdi Mohammed branch of the United Somali Congress

Sarva Shiksha Abhiyan, Govt of India's Education for All programe.

Special Service Agreement, a contract modality in the United Nations

Shan State Army, an army fighting for independence in Myanmar, (Burma)

Super Systolic Array, the generalization of the Systolic array.