The term Social Security has several uses.

• Social security - the general concept of providing welfare
• Social Security (United States) - the United States retirement/disability program
• Social Security Administration - the agency which administers the U.S. program
• Social Security number - the identification number widely used in many countries
• Social Security Trust Fund - the financial accounts for the U.S. retirement program
• Social Security Act of 1935 - the Act which established Social Security in the United States