- Saari
- Sabado
- Sabaka
- Sabatine
- Sabio
- Sablan
- Saboe
- Sadighi
- Sadler
- Saeman
- Saenz
- Safbom
- Safire
- Safranek
- Sage
- Sagel
- Sahanas
- Saif
- Sajor
- Sak
- Sakal
- Sakelhide
- Sakurai
- Salanitri
- Salazar
- Salcedo
- Saleem
- Salehian
- Sales
- Saley
- Salgado
- Salgo
- Saliga
- Salihef
- Salka
- Salls
- Salmerton
- Salter
- Saltzman
- Salvo
- Salvucci
- Samaha
- Samardzija
- Sambrano
- Sammons
- Samuels
- Sanborn
- Sanchez
- Sandahl
- Sandberg
- Sandekian
- Sanders
- Sanderson
- Sandler
- Sandness
- Sandoval
- Sandquist
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- Sandwick
- Sanford
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- Sanor
- Sanroman
- Sansone
- Santana
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- Santiago
- Santiano
- Santina
- Santoni
- Santoro
- Santoyo
- Sanzera
- Sapelak
- Sarabia
- Saracini
- Sardo
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- Sarich
- Sarmenta
- Sarmiento
- Saroya
- Sarria
- Sasaki
- Saskin
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- Sasso
- Satara
- Sataray
- Satariano
- Saterlie
- Sather
- Sato
- Satterlee
- Sauceda
- Sauer
- Sauerwein
- Saunders
- Sauvage
- Savage
- Saverino
- Savio
- Sawatzky
- Sawdon
- Sawicki
- Sawyer
- Saxe
- Saxen
- Saxton
- Sayavong
- Sayegh
- Saylor
- Sberna
- Sboto
- Scanlon
- Scarborough
- Scarbro
- Scarcelli
- Scarine
- Scarpati
- Schaan
- Schaefer
- Schafer
- Schaffer
- Schanowitz
- Schanuel
- Schatzberg
- Schauer
- Schaus
- Scheck
- Scheele
- Schelke
- Schenck
- Scher
- Scheuer
- Schiffel
- Schilder
- Schille
- Schiller
- Schiltz
- Schindler
- Schlageter
- Schlater
- Schleich
- Schleiker
- Schlein
- Schloss
- Schlossberg
- Schlueter
- Schmidt
- Schmidt-Cool
- Schmitt
- Schmucker
- Schneck
- Schneider
- Schneiderman
- Schnell
- Schoenberg
- Scholl
- Scholtes
- Scholz
- Schopick
- Schouten
- Schraeder
- Schrager
- Schram
- Schroeder
- Schuck
- Schueler
- Schuettler
- Schuler
- Schult
- Schultz
- Schulz
- Schuth
- Schutts
- Schwab
- Schwartz
- Schwartzbach
- Schwartzer
- Schwartzman
- Schwarz
- Schweichler
- Schweppe
- Schwisow
- Sckalor
- Scott
- Scully
- Seal
- Seals
- Searcy
- Seastrand
- Sebbo
- Secara
- Sechrist
- Seckinger
- Sedigheh
- Sedler
- Seegmiller
- Seehafer
- Seelbach
- Seely
- Seeman
- Segel
- Segismundo
- Segler
- Seglin
- Segura
- Sehein
- Sehne
- Seibert
- Seidel
- Seifman
- Seitz
- Sekikawa
- Sellers
- Sells
- Selman
- Selover
- Selph
- Selwood
- Senseney
- Senteneri
- Sepede
- Sepich
- Sepulveda
- Sera
- Seraydarian
- Serdoz
- Serfas
- Seright
- Severance
- Sevigny
- Seward
- Seyda
- Sgamma
- Shaddy
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- Shafer
- Shaffar
- Shallenberger
- Shalmy
- Shane
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- Shannon
- Shanta
- Shapiro
- Shappie
- Sharetts
- Sharkey
- Sharp
- Sharpe
- Sharples
- Sharron
- Shaw
- Shawhan
- Shay
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- Shearer
- Shearin
- Sheehan
- Sheer
- Sheeran
- Shehadi
- Shelburne
- Shell
- Shelmire
- Shelton
- Shema
- Shen
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- Shepherd
- Sher
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- Sherrett
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- Sherry
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- Shields
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- Shin
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- Shipman
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- Shore
- Shorey
- Shostik
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- Shubert
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- Shugerman
- Shuk
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- Shumway
- Shupe
- Shusterman
- Shutt
- Sibert
- Sibio
- Sichak
- Sidener
- Sider
- Sidhu
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- Siemionkowicz
- Sierra
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- Sigler
- Sigwart
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- Silva
- Silveira
- Silver
- Silverio
- Silverman
- Silvers
- Silverstein
- Silveyra
- Simcox
- Simmon
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- Simmons
- Simo
- Simon
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- Simons
- Simper
- Simpson
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- Sinay
- Sinclair
- Singel
- Singer
- Singh
- Singhasiri
- Singletary
- Singman
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- Siu
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- Skall
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- Skancke
- Skeirik
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- Skinner
- Sklar
- Skochenko
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- Skouson
- Skrdla
- Skulsky
- Skupien
- Slack
- Slade
- Slafka
- Slagle
- Slaney
- Slater
- Slatkin
- Slaughter
- Sleight
- Slifkin
- Sligar
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- Slocum
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- Sly
- Small
- Smallridge
- Smart-Dervieux
- Smerke
- Smisek
- Smith
- Smitha
- Smithey
- Smolnik
- Smoody
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- Snavely
- Snell
- Sniffen
- Snook
- Snopkowski
- Snow
- Snyder
- So
- Soard
- Soberano
- Sobrero
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- Socha
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- Sokol
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- Soldano
- Solimine
- Solis
- Sollott
- Solomon
- Solsaa
- Somerville
- Sommer
- Sommerfeld
- Sommerfield
- Son
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- Song
- Sontag
- Soo
- Soriano
- Soro
- Sorom
- Sorrell
- Sorto
- Sosnine
- Sotnick
- Soucy
- Soukas
- Soule
- Sousa
- South
- Souvannaphong
- Sowards
- Sozanski
- Spah
- Spanopoulos
- Spanton
- Spargo
- Sparkman
- Sparks
- Sparrow
- Spataro
- Spavin
- Spawn
- Speck
- Speckert
- Speen
- Speer
- Spence
- Spencer
- Sperling
- Spero
- Spetyla
- Spiegel
- Spier
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- Spiewak
- Spigelmyer
- Spilker
- Spiller
- Spina
- Spitler
- Spleen
- Splittgerber
- Spohn
- Spoor
- Sprague
- Sprenger
- Sproul
- Spurling
- Spurlock
- Squiers
- Sroka
- Stadtlander
- Stafford
- Stag
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- Stahl
- Stalnaker
- Stalzer
- Stambaugh
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- Stammer
- Stampley
- Stanfill
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- Stankiewicz
- Stankosky
- Stanley
- Stanton
- Starbird
- Stark
- Starkey
- Starks
- Starosciak
- Starr
- Stasi
- Staten
- Stavropoulos
- Stayer
- Stead
- Stears
- Stebbins
- Steele
- Stefanelli
- Steffey
- Stefko
- Steiding
- Steigman
- Stein
- Steinberg
- Steiner
- Steinhardt
- Steinhoff
- Stelzner
- Stember
- Stengel
- Stepan
- Stephan
- Stephen
- Stephens
- Stephenson
- Sternberg
- Sterns
- Stettler
- Stevens
- Stevenson
- Steverson
- Stewart
- Stgermain
- Stibor
- Stice
- Stidham
- Stiglianese
- Stilley
- Stimpson
- Stine
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- Stinger
- Stingley
- Stiscak
- Stith
- Stoa
- Stocker
- Stockert
- Stockle
- Stockman
- Stockner
- Stockton
- Stokes
- Stolle
- Stone
- Stonecipher
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- Stoughton
- Strade
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- Strand
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- Strassner
- Stratford
- Stratton
- Straub
- Straus
- Strauser
- Strauss
- Streifel
- Strick
- Strickland
- Strmiska
- Strock
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- Strong
- Strope
- Strother
- Stroud
- Stroup
- Strouse
- Strull
- Strusser
- Stryde
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- Stuhmer
- Stump
- Stupeck
- Sturgill
- Sturgiss
- Sturlis
- Sturonas
- Stutzman
- Suarez
- Subject
- Sublette
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- Suckow
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- Sullivan
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- Sumner
- Sumrall
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- Supakul
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- Sutton
- Suzuki
- Suzumoto
- Svensson
- Swager
- Swain
- Swan
- Swann
- Swanson
- Swarts
- Sweeney
- Sweet
- Sweetwine
- Swenson
- Swesky
- Swick
- Swiderski
- Swiercinsky
- Swift
- Swirbull
- Swonger
- Swope
- Sykes
- Sylivs
- Sylvester
- Sylvia
- Symons
- Syverson
- Szczygieski
- Szelap
- Szukala