Silv - snow
- Silver Bubble
- silver certificate
- Silver Democrats
- Silver Fox
- Silver Grays
- Silver Oak-Leaf Cluster
- Silver Palm
- Silver Republican Party
- Silver Shirts
- Silver Spring
- Silver Star
- Silver State
- Silver Thursday
- Simak, Clifford Donald
- Simi Valley
- Similac
- Simmons
- Simmons College
- Simms, William Gilmore
- Simon and Garfunkel
- Simon Legree
- Simon Wiesenthal Center
- Simon, (Marvin) Neil
- Simon, Herbert Alexander
- simple conference
- simple resolution
- Simplicity
- Simpson, George Gaylord
- Simpson, Louis (Aston Marantz)
- Simpson, Orenthal James (O. J.)
- Simpson-Mazzoli bill
- simulcast
- Sinatra, Frank
- Sinclair, Harry Ford
- Sinclair, Upton Beall
- Sing Sing
- sing-along
- Singer
- Singer, Isaac Bashevis
- Singer, Isaac Merrit
