- Sackuvich
- Sadrakula
- Salazar
- Sambol
- Sams
- Samuels
- Sanborn
- Sanchez
- Sanders
- Sands
- Saunders
- Sayles
- Saylor
- Scheele
- Schierbaum
- Schleicher
- Schleimer
- Schmidt
- Schmitz
- Schneider
- Schoenfish
- Schooley
- Schrag
- Schroeder
- Schuberger
- Schultz
- Scott
- Scovil
- Sears
- Sedgwick
- Sedorcek
- Seetin
- Segura
- Seitter
- Selzer
- Serra
- Serrano
- Servais
- Sevy
- Shaffer
- Shanin
- Shannon
- Sharp
- Shaumeyer
- Shebel
- Shelby
- Shepherd
- Shockey
- Shuker
- Shumaker
- Siebert
- Siegmund
- Sigwing
- Silva
- Silver
- Simkins
- Simmons
- Simonich
- Simons
- Simpson
- Sims
- Siscoe
- Sixta
- Skwarlo
- Slaughter
- Slay
- Smarekar
- Smith
- Smoots
- Smothers
- Snow
- Sobotka
- Solis
- Sooter
- Soptic
- Soptick
- Soronda
- Sorondo
- Soto
- Spaits
- Spalding
- Sparks
- Spearman
- Spehar
- Spencer
- Spero
- Spiva
- Springer
- Sprowl
- Stack
- Stadler
- Stallard
- Stampley
- Standish
- Stankewsky
- Stanton
- Stark
- Starr
- States
- Stauch
- Stedman
- Steinbrink
- Steineger
- Stephens
- Stephenson
- Sterley
- Stevenson
- Stewart
- Stigers
- Stilley
- Stillwell
- Stimac
- Stimetz
- Stine
- Stokes
- Stone
- Stordahl
- Story
- Stout
- Stramel
- Stratton
- Streeter
- Strick
- Strimple
- Stroud
- Strumillo
- Stuart
- Stubbs
- Studyvin
- Stuempel
- Stump
- Stutzman
- Styles
- Sullivan
- Summa
- Summerlin
- Super
- Suter
- Svaglic
- Swearengin
- Sweetwood
- Swisher
- Swofford
- Szewc