- Saintoyant
- Salazar-Ashford
- Saldana
- Salvador
- Sanders
- Sandoval
- Sands
- Sanniola
- Santiago
- Santos
- Saraco
- Sarafian
- Sargious
- Sarian
- Sarkissan
- Sarkissian
- Saunders
- Savage
- Sax
- Schammel
- Schlinger
- Schmidt
- Schoettler
- Schofield
- Schuck
- Schulman
- Sciarra
- Scott
- Scranton
- Scull
- Secrest
- Sedenquist
- Sedlik
- Segovia
- Seip
- Selders
- Sellers
- Serrano
- Seto
- Seymour
- Shekerdemian
- Sheldon
- Shemet
- Shen
- Sher
- Shiffman
- Shively
- Shuster
- Shwery
- Sicka
- Sidenfaden
- Siechert
- Siegel
- Siewert
- Silberberg
- Silcock
- Simmons
- Simoneau
- Sinha
- Skelly
- Skelton
- Slater
- Sloat
- Smith
- Snyder
- Sork
- Sparks
- Spears
- Spitz
- Springer
- Stabler
- Stark
- Stassen
- Steed
- Steffin
- Stegmeier
- Steinwedell
- Stellern
- Sterling
- Sternberg
- Stevens
- Stolper
- Story
- Stover
- Stowers
- Strand
- Strauss
- Sturges
- Sue
- Sugee
- Sullivan
- Sultanian
- Summers
- Sumner
- Sutherland
- Sutherlen
- Sutton
- Suzuki
- Symonds