- Saavedra
- Saba
- Sabatino
- Sabbag
- Sabino
- Sadler
- Saenz
- Saffer
- Sage
- Sahina
- Saintjoy
- Sakalas
- Salamy
- Salazar
- Salcedo
- Saldiver
- Saley
- Salgado
- Salkey
- Sallee
- Salmieri
- Salmon
- Salomone
- Saltos
- Saltzman
- Salvo
- Samarjia
- Samayoa
- Sammons
- Sampath
- Sampson
- Samuels
- Sanabria
- Sanborn
- Sanchez
- Sander
- Sanders
- Sanderson
- Sandler
- Sandlin
- Sandolo
- Sandoz
- Sands
- Sane
- Sanford
- Sangmeister
- Sangrey
- Sanichar
- Sano
- Sansone
- Santaniello
- Santeusanio
- Santiago
- Santo
- Santoro
- Santos
- Santspree
- Sardella
- Sarette
- Sargent
- Sarkovics
- Sartori
- Sasman
- Sato
- Satterlund
- Satterthwaite
- Satz
- Sauer
- Saulino
- Saulpaugh
- Saulsby
- Saumell
- Saunders
- Saurez
- Sawyer
- Saxon
- Sayani
- Sayers
- Scanlan
- Scanlon
- Scantling
- Scarabino
- Scarborough
- Scarbrough
- Schaefer
- Schaeffer
- Schaffer
- Schambon
- Schandel
- Scharr
- Schaub
- Schaus
- Scheer
- Scheinler
- Scheller
- Schendel
- Schenkel
- Scherr
- Scheungrab
- Schiavi
- Schieber
- Schild
- Schildwachter
- Schiller
- Schilling
- Schiraldi
- Schissler
- Schkerke
- Schmalhorst
- Schmid
- Schmidt
- Schmitt
- Schneider
- Schober
- Schockey
- Scholl
- Schonefeld
- Schoomaker
- Schoonmaker
- Schoppe
- Schott
- Schrader
- Schrager
- Schraufnagel
- Schreiber
- Schrenker
- Schroeder
- Schubert
- Schuch
- Schuett
- Schulte
- Schultz
- Schurz
- Schuster
- Schwab
- Schwartz
- Schween
- Schwerman
- Schwier
- Scicchitano
- Sconyers
- Scott
- Scotto
- Screen
- Scruggs
- Seal
- Seaman
- Seamon
- Sears
- Seay
- Secretan
- Sedlak
- Seeger
- Seegers
- Seemongal
- Seesochan
- Sefcik
- Seff
- Sefick
- Seggi
- Sego
- Segovia
- Seibert
- Seiler
- Seithel
- Seladi
- Selkow
- Sellers
- Semb
- Sembrano
- Semiao
- Sempier
- Semple
- Semuta
- Sengsourya
- Senkbeil
- Senra
- Senter
- Sepe
- Serafine
- Seremet
- Sermon
- Serrano
- Sessions
- Settle
- Sevigny
- Sewell
- Sexton
- Seyfert
- Sgro
- Shader
- Shafer
- Shaffer
- Shafi
- Shah
- Shakouri
- Shaller
- Shamma
- Shanks
- Shannon
- Shapiro
- Shappard
- Share
- Shargaa
- Sharifi
- Sharma
- Sharp
- Sharzaman
- Shatara
- Shaughnessy
- Shaw
- Shawaga
- Sheffield
- Sheketoff
- Shelby
- Shelhorn
- Shelley
- Shellhammer
- Shelnutt
- Shelton
- Shepherd
- Sheppard
- Sherbine
- Sherbondy
- Sherer
- Sherman
- Sherod
- Sherren
- Sherrill
- Shields
- Shimada
- Shirek
- Shoaf
- Shockley
- Shoemaker
- Short
- Shorten
- Shoucair
- Shroyer
- Shuga
- Shultz
- Shum
- Shutt
- Shutters
- Shvartsman
- Siak
- Sias
- Sick
- Siddiqui
- Siders
- Sidhu
- Sidley
- Siegel
- Sierra
- Siggins
- Sigman
- Sikes
- Sikora
- Silen
- Sills
- Silva
- Silver
- Silvers
- Simasek
- Simendinger
- Simmons
- Simone
- Simons
- Simonsen
- Simpson
- Sims
- Sin
- Sinatra
- Sindt
- Sines
- Singer
- Singh
- Singletary
- Singleton
- Sink
- Sirbu
- Sirota
- Sisinni
- Sisk
- Sistler
- Sites
- Sito
- Six
- Sixto
- Sjostedt
- Skaggs
- Skambis
- Skelton
- Skersick
- Skidmore
- Skilling
- Skinner
- Skipper
- Skjersaa
- Skorman
- Skove
- Skowron
- Skrzynski
- Slattery
- Slaughter
- Slavin
- Slesnick
- Slimak
- Sloan
- Slone
- Slyker
- Smalley
- Smetheram
- Smisek
- Smit
- Smith
- Smith-Persons
- Smitley
- Sneed
- Snider
- Snodgrass
- Snook
- Snow
- Snowball
- Snyder
- Soares
- Sobolevskiy
- Socarras
- Sojourner
- Sokol
- Sokolitsky
- Solares
- Soler
- Solik
- Sollars
- Sollenberger
- Solomon
- Sommer
- Sonday
- Sookraj
- Soper
- Sorice
- Sorn
- Sorrentino
- Sostre
- Soto
- Sotolongo
- Souder
- Soviero
- Sowers
- Spagnola
- Spangler
- Sparks
- Specht
- Speicher
- Spellers
- Spence
- Spencer
- Spiak
- Spilker
- Spolar
- Spoone
- Spooner
- Spoonley
- Spore
- Sprau
- Sprick
- Springall
- Springer
- Springsteen
- Spry
- Spurlin
- Spurlock
- Squillaro
- Srofe
- St Lawrence
- Staab
- Stack
- Stackfleth
- Stacy
- Stadler
- Stafford
- Staiger
- Staight
- Staines
- Stajic
- Staley
- Stallard
- Stallings
- Stalvey
- Stamper
- Stamps
- Standish
- Stanglein
- Stankos
- Stanley
- Stanly
- Stanton
- Staples
- Stapleton
- Stapp
- Staraitis
- Starcher
- Stark
- Starling
- Starn
- Starr
- Stas
- Staschke
- Staskus
- States
- Staub
- Stawicki
- Steadman
- Steakley
- Stearns
- Stebbins
- Stec
- Steding
- Steele
- Steffan
- Steffen
- Steffenhagen
- Steiner
- Steinert
- Steinhaus
- Steinhauser
- Steinhoff
- Stella
- Stellhorn
- Stendel
- Stephan
- Stephen
- Stephens
- Stephenson
- Stepney
- Sterling
- Stern
- Steshik
- Stetson
- Stevens
- Stevenson
- Steving
- Steward
- Stewart
- Stidham
- Stiegman
- Stiffler
- Stiggins
- Stilabower
- Still
- Stillwell
- Stilp
- Stimson
- Stine
- Stiner
- Stinson
- Stjohn
- Stockard
- Stocker
- Stockford
- Stockton
- Stoddard
- Stoehr
- Stoermer
- Stoetzer
- Stofcik
- Stoffer
- Stokes
- Stolarski
- Stollard
- Stoltz
- Stone
- Stoner
- Storm
- Storma
- Story
- Stott
- Stout
- Stoute
- Stover
- Strachan
- Strain
- Strasser
- Stratton
- Straub
- Strauch
- Strauss
- Streby
- Streeter
- Strella
- Strickland
- Strine
- Strobeck
- Strobel
- Stroble
- Strohaver
- Strohm
- Strong
- Stroven
- Strunk
- Stucker
- Stum
- Stvincent
- Styczynski
- Styer
- Styles
- Su
- Suarez
- Suazo
- Subatis
- Suberman
- Sudimak
- Suh
- Sukkert
- Suleiman
- Sullivan
- Sulouff
- Summer
- Summers
- Sumner
- Sundberg
- Sunderland
- Sunkara
- Surjan
- Surpris
- Surran
- Surrena
- Suryanarayana
- Susser
- Sutherland
- Sutphin
- Sutton
- Suwan
- Suzuki
- Swain
- Swank
- Swartz
- Swayze
- Sweat
- Sweatman
- Sweeney
- Sweet
- Sweitzer
- Swenk
- Swenson
- Swindell
- Swiney
- Swinton-McCall
- Sykes
- Symbold
- Szewczyk
- Szydlowski
- Szymankiewicz
- Szymanski